Mrs. Best and her friends tried scuba diving for the first time on a cruise to the Bahamas. From the time they jumped off the boat to the time they reached the lowest point, their elevation changed by -24 feet. Which one of these statements could represent their time scuba diving?
A. -10 - 42
B. 10 + (-34)
C. 10 + 24
D. -34 + (-10)