Use the following graph to answer the questions below.

-According to the graph,naive memory cells will be produced

A)between 0 and 7 days.
B)between 7 and 14 days.
C)between 28 and 35 days.
D)between 35 and 42 days.
E)both between 0 and 7 days and between 28 and 35 days.