Layla Was at the Bar When She Met Steve

Layla was at the bar when she met Steve. He seemed like a nice guy and Layla was excited to get his phone number. He told her his number and then left when she realized she had nothing to write with. She could not program his number into her cell phone because her battery had just died. What should Layla do in order to increase her chances of remembering the number until she has an opportunity to write it down?

A) She should use displacement.
B) She should give up because there is no way she'll remember it.
C) She should utilize metacognition.
D) She should use rehearsal.