The Relationship Between the Insolation Curve and the Air Temperature

Multiple Choice

The relationship between the insolation curve and the air temperature curve on a graph of daily surface energy

A) exhibits a lag of several hours between the plotted lines.
B) shows little or no relationship between the two variables.
C) shows that peak temperatures occur near noon, whereas peak insolation receipt is at 3:00 or 4:00 P.M.
D) coincide at noon.