In Temperate Oceans of the Northern Hemisphere During the Summer

In temperate oceans of the northern hemisphere during the summer months:

A) nutrient concentrations are high, solar input is low, and dissolved oxygen decreases.
B) nutrient concentrations are high, solar input is high, and dissolved oxygen decreases.
C) nutrient concentrations are high, solar input is high, and dissolved oxygen increases.
D) nutrient concentrations are low, solar input is high, and dissolved oxygen decreases.
E) nutrient concentrations are low, solar input is high, and dissolved oxygen increases.