Sofia will attend a sequence of daily training sessions for her job. On the last day of her training sessions, she will attend either 1 session or 2 sessions. On each of the other days of her training sessions, she will attend exactly 2 sessions. At the end of her third day of attending training sessions, how many sessions will Sofia have left to attend?

(1) The sequence of training sessions Sofia will attend will last 6 days.
(2) There are a total of 11 training sessions in the sequence of training sessions Sofia will attend.

Answer: B

Source: GMAT Prep