The number of people who live in a unit of area is called the population density of the area. It usually given as people "per square mile" or "per square kilometer". A map of the Orchard Hill Neighborhood is shown. The population of the Orchard Hill Neighborhood is 360 people. The lenght of each block is the same and the lenght of 20 blocks is 1 mile.

What is the area in square miles of Orchard Hill?

A. 0.35 square mile

B. 0.03 square mile

C. 0.15 square mile

D. 0.60 square mile​