Marita always listens to her favorite radio station, an oldies station, when she drives her car. she listens to her radio every morning on the way to school. on monday, she turns on her car radio and it is playing country music. which of the following is a valid conjecture for why her radio is playing different music? a. her favorite station has changed its morning program to include country music. c. all of the statements are valid conjectures. b. someone used her car during the weekend and changed the station. d. a country music station bought out her favorite music station over the weekend.