Darnell wrote this expression to describe the number of bus rides he has left on his bus pass. p – 12 which situation could be described by this expression? a. darnell does not know the total number of rides he gets on the bus pass. he does know that he has used 12 rides so far. b. darnell does not know how many rides he has already used. he knows he has 12 bus rides left on the bus pass. c. darnell does not know how many rides he has left on the bus pass. he knows it is 12 fewer rides than he has already used. d. darnell does not know how many bus rides he has left on the bus pass. he knows that he gets a total of 12 rides on the bus pass.