Answer:
Carlos is correct. If the numerators are the same, the fraction with the lesser denominator will be greater.
Explanation:
I'll answer this question using the following illustration.
Let a fraction be:

and another fraction

Both numerators are 1. In other words, they are equal
When you compare the denominator, 2 and 4, the fraction with lesser denominator is greater
This is so because:


By comparison

This analysis can be used for any fraction as long as they have the same numerator
Hence, option A answers the question