Which of the Following Statements Is/are False

Multiple Choice

Which of the following statements is/are false?

A) All favourable variances represent the costs of producing efficiently.
B) Favourable variances (after closing to cost of goods sold) cause cost of goods sold to be lower.
C) Significant favourable variances do not need to be investigated by managers.
D) All favourable variances represent the costs of producing efficiently AND significant favourable variances do not need to be investigated by managers.