Given the task definition and input, reply with output. 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.

Problem: vijay lent out an amount rs. 10000 into two parts, one at 8 % p. a. and the remaining at 10 % p. a. both on simple interest. at the end of the year he received rs. 890 as total interest. what was the amount he lent out at 8 % pa. a ?
Options: a. 5529, b. 5500, c. 5520, d. 5521, e. 5192
b