By Some Estimates,17 to 34 Acres Worth of Grain Crop

By some estimates,17 to 34 acres worth of grain crop are required to produce a ton of beef (about four cows) .This same amount of land could have been used to grow food to feed ____________ times more people than the ton of beef can feed.

A) 1 to 2
B) 5 to 10
C) 10 to 20
D) 30 to 40
E) 90 to 100