Efrida and Frazer who live 12 miles apart, meet at a restaurant that is directly north of Efrida's home and directly east of Frazer's home. If the restaurant is two miles closer to Efrida's home, than to Frazer's home, how many miles is the restaurant from Frazer's home?
Options:
A) 6  B) 7  C) 8  D) 10  E) 11

Rationale: "it ' s a simple geometry problem . look at the diagram below : answer : d ."
Answer: D