Which of the following statements are examples of labor except:

A) a computer programmer debugs a complicated piece of code that permits a computer program to function properly.
B) a company manager develops a spreadsheet of all of the products of the company with the accompanying profits of each in order to weed out poor performing ones.
C) a group of church members gather clothes for a clothing drive for the poor in their community.
D) a mechanic replaces the water pump on a car at the local Ford dealership.