Answer:
The correct option is D) (0.015) $125.
Explanation:
Consider the provided information.
It is given that the APR=18%
Therefore monthly interest can be calculated as
Monthly interest =

Monthly interest =

During the first month,Caitlyn charged $375 and paid $250 of that in her billing cycle.
Therefore, amount liable for interest charges is:
375 - 250 = $125
Hence, the interest can be calculated as:
(0.015) $125
Therefore, the correct option is D) (0.015) $125.