If from Last Year to the Current Year's Audit,inherent Risk

Multiple Choice

If from last year to the current year's audit,inherent risk has stayed constant but control risk is higher (it is more likely that controls do not detect material errors) ,what is the likely effect on detection risk?

A) Detection risk will increase.
B) Detection risk will decrease.
C) Detection risk will stay the same.
D) Detection risk will need less documentation.