Answer the next five questions [2pts each] based on the above product-tree. Show all your work to receive any partial credit.

a) If 15 Xs are needed, and there is no on-hand inventory for any item, how many Bs will be needed?

b) If 15 Xs are needed, and there is an on-hand inventory for 20 Cs, how many Bs will be needed?

c) If 15 Xs are needed, and there is an on-hand inventory for 20 Cs, how many Cs will be needed?

d) If 15 Xs are needed, and there is an on-hand inventory for 10 Bs and 20 Cs, how many Bs will be needed?

e) If 15 Xs are needed, and there is an on-hand inventory for 10 Bs and 20 Cs, how many Cs will be needed?

C(4) B(3) A(3) D(4) || C(2) | N(4) N(4) M(3)