Mr.Carter owned a ranch with 7 1/4 acres. Last year ,he bought 3 1/5 acres of land from his neighbor. Then he sold 2 1/4 acres. How many acres does Mr.Carter own now?

A) 10 9/20 acres
B) 8 1/5 acres
C) 12 7/10 acres
D) 6 3/10 acres