The correct answer is 8/7.
In order to find the answer of this problem, multiply both the tops (numerators) by each others.
4 * 6 = 24
Now, multiply both the bottoms (denominators) by each others
3 * 7 = 21
Now we have an answer of 24/21, but both numbers are multiples of 3. So we can that to simplify to 8/7