Identify the explanatory and response variables in the following situation:

There is a strong positive correlation between latitude above the equator and number of hours of daylight on June 21.

A. Explanatory: Latitude
Response: Average temperature
B. Explanatory: Daylight hours
Response: Latitude
C. Explanatory: Time of year
Response: Daylight hours
D. Explanatory: Latitude
Response: Daylight hours