Refer to the Figure

Multiple Choice

Refer to the figure.
Suppose that trees in the boreal forest biome, a climate diagram for which is shown here, require at least 35 mm of average monthly precipitation to grow. The average growing season is 130 days per year. According to the climate diagram, growth in boreal forests is most likely limited by

A) temperature only.
B) precipitation only.
C) both temperature and precipitation.
D) temperature in the winter and precipitation in the summer.