At 7 a.m., the temperature was 15 degrees Fahrenheit below zero. By 2 p.m., the temperature rose 32 degrees Fahrenheit, and by 5 p.m., it dropped 10 degrees Fahrenheit. What was the temperature at 5 p.m.?
A. 10 degrees Fahrenheit
B. 9 degrees Fahrenheit
C. 7 degrees Fahrenheit
D. 11 degrees Fahrenheit