Resset Co. provides the following results of April's operations: F indicates favorable and U indicates unfavorable. In applying management by exception, the company investigates all variances of $4,580 or more. Direct materials price variance Direct materials quantity variance Direct labor rate variance $ 3, 450 F 34,200 U 1,200 U Direct labor efficiency variance Controllable overhead variance Fixed overhead volume variance $5,380F 4,580 U 4,780 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 quantity variance Direct labor efficiency variance Controllable overhead variance Direct materials price variance Direct labor rate variance Fixed overhead volume variance