At sunrise, the temperature was –4.5°C. During the day, the temperature rose 9.7°C and then fell 4.8°C.


What was the final temperature?


A.

–19°C


B.

0.4°C


C.

10°C


D.

9.4°C

I think it's 9.4, but I'm not sure. I used to be pretty good at these questions, but I'm kinda rusty, so please give an easy to understand explanation!