Task: Question Answering
Input (English): Problem: if a farmer wants to plough a farm field on time, he must plough 120 hectares a day. for technical reasons he ploughed only 85 hectares a day, hence he had to plough 2 more days than he planned and he still has 40 hectares left. what is the area of the farm field and how many days the farmer planned to work initially ?
Options: a. 600, b. 490, c. 720, d. 435, e. 679
Output (English): c