Profit for Sandos Inc

Profit for Sandos Inc., was $ 10,000 in 2021. Shareholders' equity was $ 100,000 at December 31 2019, $ 200,000 at December 31, 2020, and $ 300,000 at December 31, 2021. Return on equity for 2021 is

A) 5%.
B) 4%.
C) 3.3%.
D) 10%.