Margo Purchased 2,000 Shares of Qualifying Section 1202 Stock Six

Margo purchased 2,000 shares of qualifying Section 1202 stock six years ago for $200,000.In the current year, she sold the stock for $2,000,000.How much gain can she exclude from her income?

A) $2,000,000
B) $1,800,000
C) $900,000
D) $200,000