Marten Company has a cost-benefit policy to investigate any variance that is greater than \\( \\$ 1,000 \\) or \\( 10 \\% \\) of budget, whichever is larger. Actual results for the previous month indicate the following. The company should investigate 3. neither the materials variance nor the labor variance. b. the materials variance only. c. the labor variance only. Od. both the materials variance and the labor variance