In July 2018, Harriet Sells a Stamp from Her Stamp

In July 2018, Harriet sells a stamp from her stamp collection at a gain of $500. Harriet purchased the stamp in 2010. If Harriet is in the 35% marginal tax rate bracket and has no other capital asset sales in 2018, what is her tax on the sale of the stamp?

A) $50
B) $75
C) $125
D) $140
E) $175