Today, noah swam 1 mile at swim practice and liam sprinted 880 yards at track practice. how many more yards did noah travel during exercise?

In the given question, there are certain information's that are worth looking at. Firstly Noah swam for a distance of 1 mile at swim practice. Liam, on the other hand, ran for 880 yards. 
Now firstly we need to convert the distance swam by Noah from mile to yards.
We already know that
1 mile = 1760 yard
So Noah swam for a distance of 1760 yards.
On the other hand, Liam sprinted for a distance of 880 yards.
So
The distance Noah traveled more than Liam = (1760 - 880) yards
                                                                         = 880 yards
so Noah traveled 880 yards more.

The funny thing is the answer is 880 I believe

Letter c so sorry if i’m wrong ):