At a certain conference, 150 students spoke one or more of the following languages: Spanish, English, and French. If 57 students spoke Spanish, 90 spoke English, 65 spoke French, and 32 spoke only 2 languages, how many students spoke three different languages?  Choose the correct choice from the following options:
A) 7
B) 9
C) 12
D) 15
E) 18
150=57+90+65-32-2x   x=15   D. 15
<result>D</result>
At a certain conference, 150 students spoke one or more of the following languages: Spanish, English, and French. If 57 students spoke Spanish, 90 spoke English, 65 spoke French, and 32 spoke only 2 languages, how many students spoke three different languages?