In a forest, unusually-cold weather has caused the oak trees to produce fewer acorns. How would this most likely affect the forest's squirrel population?
A.
The average size of individual squirrels would decrease.
B.
The average size of individual squirrels would first increase, then decrease.
C.
The average size of individual squirrels would stay the same.
D.
The average size of individual squirrels would increase.