Q:Here's a short story: Milo was putting up a new fence on his farm in a couple different locations. He figured out that plunging his fence posts into a grassy field created less heat then plunging them into a dirt field. After thinking about this information he realized that the _____ was smoother (A) grassy field (B) dirt field.  What is the most sensical answer between "grassy field" and  "dirt field"?
A:
grassy field