After a Decrease in the Price of CDs, Samia Buys

Multiple Choice

After a decrease in the price of CDs, Samia buys fewer cassette tapes and purchases a new CD player. For Samia,

A) CD players and cassette tapes are complements.
B) CDs, CD players, and cassette tapes are all complements.
C) CDs, cassette tapes, and CD players are all substitutes.
D) CDs and cassette tapes are substitutes, and CDs and CD players are complements.