(a) If 17 Ps are needed, and no on-hand inventory exists for any item, how many As will be needed? (b) If 17 Ps are needed, and on-hand inventory consists of 10 As, how many As will be needed? (c) If 17 Ps are needed, and on-hand inventory consists of 10 Ps, how many As will be needed? (d) If 17 Ps are needed, and no on-hand inventory exists for any item, how many Cs will be needed? (e) If 20 Ps are needed, and no on-hand inventory exists for all items except C. We have 20 units of C on-hand, how many more Cs will be needed? Question 4: Answer the next four questions based on this product-tree: P(1) A(2) B(3) C(4) M(3) N(4) C(3) D(4)