Identify whether each of the following is strategic or tactical. Give your reasoning for each choice.

a$.$ Negotiating a sale price with an individual customer

b$.$ Negotiating a delivery contract with a major supplier

c$.$ Establishing a preventative maintenance schedule for a newly purchased machine

d$.$ Planning the weekly preventative maintenance tasks for a machine

e$.$ Deciding the layout of a section of grocery store shelving

f$.$ Deciding the layout of an entire grocery store