PT 55 S4 Q12

While on vacation, Sukanya receives several e-mail messages from work, ... ...

If Sukanya receives two e-mail messages from Lula, what is the maximum possible number of e-mail messages Sukanya receives after Lula's first message but before Lula's last message?
(A) zero
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Sequencing: Lesson Set 5 (of 5) - Repetition/Omission