The Difference in Longitude Between Boston and San Francisco Is

Multiple Choice

The difference in longitude between Boston and San Francisco is approximately 52°. They are three time zones apart, so standard clocks differ by 3 hours. Without the time zones, what would be the difference between traditional (or astronomical) noon (when the Sun is highest in the sky) at these two places?

A) 2.5 hours
B) 3 hours
C) 3.5 hours
D) 4 hours