On March 10 ,2022 Leanne exercised an incentive stock option granted to her by her employer. Her option allowed her to purchase 1,000 shares of a stock for $10 per share. When she exercised her option, the stock was trading at $15 per share. She sold the stock at a gain 6 months later when it the stock was trading at $21 per share. As a result of this transaction. As a result of this transaction, how much should be reported as short term capital gain on Leanne's 2022 tax return?

A) $0

B.) $5,000

C.) $6,000

D.) $10,000