Indicate whether each of the following costs is a direct cost for an individual franchise of a gourmet pizza chain, providing reasons to explain your answer:

(a)cost of food served

(b)pizza chef's salary and labour on-costs

(c)costs allocated to each franchise for head office design of the standard pizza menu

(d)shared costs for franchise marketing, which is managed by the franchise head office

(e)depreciation on the wood-fired oven

(f)cost of advertising initiated by the individual franchise to promote its availability for functions and events.