Dan traveled 72 miles in 24 hours. A unit rate to describe Dan's travel is 3 miles per hour. What is another unit rate in this situation?
A1 over 3 hour per mile
B1 over 3 mile per hour
C1 mile per hour
D3 hours per mile
A1 over 3 hour per mile
B1 over 3 mile per hour
C1 mile per hour
D3 hours per mile