At a certain beach if it is at least 80^{\circ} \mathrm{F} and sunny, then the beach will be crowded. On June 10 the beach was not crowded. What can be concluded about the weather conditions on June 10 ?

**Answer Choices**

A. $The temperature was cooler than 80^{\circ} \mathrm{F} and it was not sunny.$

B. $The temperature was cooler than 80^{\circ} \mathrm{F} or it was not sunny.$

C. $If the temperature was at least 80^{\circ} F, then it was sunny.$

D. $If the temperature was cooler than 80^{\circ} \mathrm{F}, then it was sunny.$

E. $If the temperature was cooler than 80^{\circ} \mathrm{F}, then it was not sunny.$