Please refer to the following short case as you respond to the next question: A painter accepts orders for original works from customers in person or via the Internet. Based on the order, the painter creates an initial sketch, which must be approved by the customer; the customer may make changes to the initial sketch. After customer approval, the painter selects appropriate materials and gives the customer a price quote. If the customer accepts the price quote, the painter creates the original work; if not, the project is abandoned. The painter stores data about customers, previous orders and previously completed works in an electronic database. A data flow diagram of the case contains three items: create initial sketch, initial sketch, finalize sketch. How are those three items likely to be represented in the data flow diagram?

a. A circle and a set of parallel lines connected by a line

b. Two circles with a set of parallel lines

c. Some other way

d. A circle and a rectangle connected by a line