Which of the Following Is the Principle "Weakness" of Using

Multiple Choice

Which of the following is the principle "weakness" of using negative confirmations for the tests of details of balances for accounts receivable?

A) They can only be used for large balance accounts.
B) They cannot be used when account balances "bunch" around a mean value.
C) Conclusions drawn from receiving no reply may not be correct.
D) Response rates are generally too low to draw any conclusions.