Which of the following statement is incorrect concerning standard costing and/or variance calculations? O A. Variances falling outside of an acceptable range of outcomes do not require investigation. O B. A favorable quantity (efficiency) variance indicates that a company used less input than allowed for the actual level of output. O C. Standards are used at the beginning of the period during to budget and at the end of the period to evaluate performance. O D. Price (rate) standards represent the expected cost per unit of input. OE. A price (rate) variance calculates the difference between what a company paid and what it expected to pay for its production input