Cost structure elements of a successful Business Model includes 

(i) How cost are allocated 

(ii) How much money can be made 

(iii) Direct and indirect costs 

(iv) Economies of scale 

a. (i), (iii) & (ii) 

b. (i), (iii) & (iv) 

c. (ii), (iii) & (iv) 

d. (i), (ii), (iii) & (iv)