Solada Had to Park on the Far End of the Lot

Solada had to park on the far end of the lot this morning, so she walked by dozens of cars on her way to class. Later, she learns that a student's car was stolen from the same lot soon after she walked through. Though she tries, she can't remember a car that meets the description of the stolen car. This is most likely due to

A) memory decay.
B) encoding failure.
C) state-dependent learning.
D) repression.