Exercise 21-1 Management by exception LO C1 Resset Co. provides the following results of April's operations: F indicates favorable and management by exception, the company investigates all variances of $13,500 or more. indicates unfavorable. In applying Direct materials price variance Direct materials quantity variance Direct labor rate variance $21,300 P 9,300 U 26,600 U Direct labor efficiency variance Controllable overhead variance Fixed overhead volume variance $13,300 F 13,500 U 13,700 F Which variances will the company investigate? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.) Direct materials price variance Controllable overhead variance Direct labor rate variance Direct materials quantity variance Direct labor efficiency variance Fixed overhead volume variance