Martha and Gordon Purchased a Home for $175,000 Six Years

Martha and Gordon purchased a home for $175,000 six years ago with a 5.5 percent,30-year $140,000 mortgage.Their home now has a market value of $210,000 and they owe $134,000 on the mortgage.What is the equity in their home?

A) $76,000
B) $70,000
C) $41,000
D) $35,000