Diana Sold Mutual Fund Shares,which She Had Owned for 4

Diana sold mutual fund shares,which she had owned for 4 years,so that she could use the proceeds to travel across Europe with her son.Diana is in the 35 percent marginal tax bracket,and her capital gains from the sale were $30,000.Diana's tax liability on the gain is _____.

A) $10,500
B) $8,400
C) $6,000
D) $4,500
E) $1,500