Compute the unit rate. Choose all that are correct.

1
2
mile in each
1
4
hour is a rate of
1
8
miles per hour.
1
2
mile in each
1
8
hour is a rate of 4 miles per hour.
1
5
mile in each
1
10
hour is a rate of 2 miles per hour.
1
2
mile in each
1
6
hour is a rate of
1
12