Required: Compute the direct materials cost variances. Note: Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option. Exercise 17.22 (Algo) Variable Cost Variances: Materials Purchased and Materials Used Are Not Equal (LO 17-2) Fischer Fabrication reported the following information concerning its direct materials: Required: Compute the direct materials cost variances. Note: Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option