Under Which Set of Circumstances May It Not Be Necessary

Under which set of circumstances may it not be necessary to perform tests of details?

A) When inherent risk is low and the acceptable level of detection risk is very high.
B) When the cost of tests of details outweigh the benefits of performing them.
C) When the results of substantive analytical procedures conform to expectations and the acceptable level of detection risk for the assertion is high.
D) When the results of substantive analytical procedures conform to expectations and the acceptable level of detection risk for the assertion is low or very low.
E) A minimum level of tests of details must always be performed