Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Problem: in right triangle abc, ac is the hypotenuse. if ac is 35 and ab + bc = 55, what is the area of the triangle abc ?
Options: a. 225, b. 450, c. 25 2, d. 200, e. 200 2
Student:
b