A man buys an article for 10% less than its value and sells it for 10% more than its value. His gain or loss percent is:________?

Irza Afzad Analytical Reasoning, Arithmetic/ Basic Math, Everyday Science, Full List, Mathematics

A. no profit, no loss
B. 20% profit
C. less than 20% profit
D. more than 20% profit

(repeat)