Which of the following statements are true?

A health club lias SOO members. 175 of whom exercised last Friday and 450 of whom exercised last Saturday. Of the members who exercised on at least one of the two days. 90 exercised both last Friday and last Saturday.

Which of the following statements are true?
A . More than 300 of the members exercised last Saturday but not last Friday.
B . More than 600 of the members exercised either last Friday or last Saturday or bom.
C . More than 400 of the members exercised neither last Friday nor last Saturday.

Answer: A