Tim's phone service charges $26.97 plus an additional $0.25 for each text message sent per month. If Tim's phone bill was $33.22, which equation could be used to find how many text messages, x, Tim sent last month?

A. $26.97x - $0.25 = $33.22
B. $0.25x + $26.97 = $33.22
C. $0.25x - $26.97 = $33.22
D. $26.97x + $0.25 = $33.22