From lowest to highest, rank the master production scheduling (MPS) approaches according to the need to monitor forecast accuracy.

a. Assemble-to-order, make-to-stock, make-to-order

b. Make-to-order, make-to-stock, assemble-to-order

c. Make-to-stock, assemble-to-order, make-to-order

d. Make-to-order, assemble-to-order, make-to-stock