The Completion Times for a Certain Marathon Race Was 3 $0.5$

Multiple Choice

The completion times for a certain marathon race was 3 hours with a standard deviation of $0.5$ hours. What can you determine about these data by using Chebyshev's Inequality with $K = 2$ ?

A) At most 88.9% of the completion times are between 2 hours and 4 hours.
B) At least 75% of the completion times are between 2 hours and 4 hours.
C) At least 88.9% of the completion times are between 2 hours and 4 hours.
D) No more than 75% of the completion times are between 2 hours and 4 hours.