Which of the Following Statements Is/are True

Multiple Choice

Which of the following statements is/are true?

A) The standard cost per unit of materials is used to calculate a materials price variance.
B) The standard cost per unit of materials is used to calculate a materials usage variance.
C) The standard cost per unit of materials cannot be determined until the end of the period.
D) The standard cost per unit of materials is used to calculate a materials price variance AND the standard cost per unit of materials is used to calculate a materials usage variance.