Cathy's collection of twelve albums includes one classical album. Cathy will choose four of her albums to play on a road trip. (Assume order is not important.) a) How many different sets of four albums could she choose? b) How many of these sets would not include the classical album? c) How many of them would include the classical album? a) Cathy can choose from different sets of albums. b) There are sets that would not include the classical album. c) There are sets that would include the classical album