Which Statement(s) Is/are True? (Select All That Apply $\beta$ Targets CREB for Transcription

Which statement(s) is/are true? (Select all that apply.)

A) C/EBP $\beta$ targets CREB for transcription.
B) C/EBP $\beta$ mRNA becomes detectable as soon as CREB is phosphorylated.
C) BDNF can initiate phosphorylation of CREB.
D) A second wave of protein synthesis is necessary for a memory to last for 7 or more days.
E) CREB targets C/EBP $\beta$ for transcription.