Answer:
Option B- Monthly payment = $527.78
Explanation:
Given : Ashley Harrison takes out a $100,000 mortgage. The total amount of interest for 30 years is $90,000.
To find : What is the payment per month?
Solution : Ashley Harrison takes out a $100,000 mortgage. Amount for 30 years $90,000.
Since the total paid for 30 years is :

The monthly payment time is 30 years
In months,



Therefore, Monthly payment = $527.78
Hence, Option B is correct.