John has a traditional IRA with a balance of $20,000, $9,000 of which comes from after-tax contributions. He also has a rollover IRA with a balance of $100,000, none of which comes from after-tax contributions. John decides to convert $50,000 of his rollover IRA to a Roth IRA. How much of the conversion will be taxed?

A)

$50,000

B)

$0, because his AGI is below $100,000

C)

$41,000

D)

$46,250