Allen Green is a single taxpayer with an AGI (and modified AGI) of $210,000, which includes $170,000 of salary, $25,000 of interest income, $10,000 of dividends, and $5,000 of long-term capital gains. What is Allen's Medicare contribution tax liability this year, rounded to the nearest whole dollar amount?
A. $2,465
B. $1,520
C. $570
D. $380