Task: Question Answering
Input (English): A telephone call cost 2 dollars for the first three minutes and 20 cents each additional minute. If a call started at 10:20 a.m. and ended at 10:50 a.m., how much did the call cost?
(A)\$7.00 (B)\$7.20 (C)\$7.40 (D)\$8.00 (E)\$8.20
Output (English): C