Jessica Was Upset Because She Was Unable to Remember Her

Jessica was upset because she was unable to remember her 4ᵗʰ birthday party, and everyone in her family was always talking about that day. A cognitive explanation for Jessica's memory loss might suggest that

A) at four, Jessica was probably not interested in remembering her past.
B) her ability to encode sensory input was limited due to her language skills.
C) a or b
D) none of these