A salt manufacturing company produced a total of 4000 tonnes of salt in January of a particular year. Starting from February its production increased by 100 tonnes every month over the previous months until the end of the year. Find its ave66rage daily production for that year?
Choose the correct choice from the following answers.
A) 140 B) 149 C) 156 D) 195 E) 100

Rationale: "total production of salt by the company in that year = 4000 + 4100 + 4200 + . . . . + 5100 = 54600 . average monthly production of salt for that year = 54600 / 365 â ‰ ˆ 149 answer : b"
Answer: B