David bought some land in 2018 for $80,000 with the intention of selling it off in 2 years for a profit. He sold the land earlier this year for $130,000, making a profit of $50,000. According to Section 118-20 of the ITAA 1997, what happens to his capital gain if say he was to make a capital gain of $40,000? His capital gain is equivalent to his profit. His capital gain is reduced to $10,000. His capital gain is reduced to zero. O His capital gain increases by $10,000