Regarding the Formation and Continued Existence of New Memories,the Process

Regarding the formation and continued existence of new memories,the process of consolidation suggests that

A) synaptic changes that lead to memories are fragile at first and must avoid disruption.
B) both echoic and iconic incoming information must be concurrent for memories to take.
C) declarative and procedural memories must overlap prior to the growth of new memories.
D) both shallow and deep processes must overlap prior to engram formation.