Go Pro Corporation makes golf carts that it sells directly to golf courses throughout the world.

Several basic models are available, which are modified to suit the needs of each particular golf course. A golf course located in British Columbia, for example, would typically specify that its golf carts come equipped with retractable rain-proof covers. In addition, each customer (i.e., golf course) customizes its golf carts with its own colour scheme and logo. The company typically makes all of the golf carts for a customer before starting work on the next customer's golf carts.

Below are listed a number of activities and costs at Go Pro Corporation:

Activity	Level
1) The purchasing department orders the specific colour of paint specified by the customer from the company's supplier.
2) A steering wheel is installed in a golf cart.
3) The company's paint shop makes a stencil for a customer's logo.
4) Completed golf carts are individually tested on the company's test track.
5) The accounts receivable department prepares the bill for a completed order.
6) An outside lawyer draws up a new generic sales contract for the company, limiting Go Pro's liability in case of accidents that involve its golf carts.
7) Electricity is used to heat and light the factory and the administrative offices.
8) A golf cart is painted.
9) A sales representative visits a previous customer to check on how the company's golf carts are working out and to try to make a new sale.
10) A new model golf cart is shipped to the leading golfing trade magazine to be evaluated for the magazine's annual rating of golf carts.
11) The company's engineer modifies the design of a model to eliminate a potential safety problem.
12) The marketing department has a catalogue printed and then mails copies to golf course managers.

Required:

1. Classify each of the costs or activities above as unit-level, batch-level, product-level, customer-level, or organization-sustaining. In this case, customers are golf courses, products are the various models of the golf cart, a batch is a specific order from a customer, and units are individual golf carts.