Monique's Florals produced a special Mother's Day arrangement that included eight roses. The standard and actual costs of the roses used in each arrangement follow: Monique's Florals planned to make 815 arrangements but actually made 920. Required a. Determine the total flexible budget materials variance and indicate whether it is favorable (F) or unfavorable (U). b. Determine the materials price variance and indicate whether it is favorable (F) or unfavorable (U). c. Determine the materials usage variance and indicate whether it is favorable (F) or unfavorable (U). d. Confirm the accuracy of Requirements a,b, and c by showing that the sum of the price and usage variances equals the total variance