Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

Q: Problem: mr. loyd wants to fence his square shaped land of 120 sqft each side. if a pole is laid every 12 ft how many poles do he need ?
Options: a. 20, b. 30, c. 40, d. 50, e. 60

A: c
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Q: Problem: a 11 % stock yields 8 %. the market value of the stock is :
Options: a. rs. 72, b. rs. 137.50, c. rs. 112.50, d. rs. 116.50, e. none of these

A: b
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Q: Problem: i had rs. 10000 with me. out of this, money i lent some money to a for 2 years at 15 % simple interest. i lent the remaining money to b for an equal number of years at 18 % simple interest. after 2 years, i found that a had given me rs. 360 more as interest as compared to ( b. the amount of money which i had lent to b must have been
Options: a. 2000, b. 3000, c. 4000, d. 5000, e. 6000

A:
c
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