The standard cost sheet for Chambers Company, which manufactures one product, follows: Standards hove been computed based on o master budget activity level of 30.600 direct labor-hours per month. Actual octivity for the past month was as follows: Required: Prepare variance analyses for the variable and fixed costs. Moterials are purchosed as they are used (Do not round intermediate colculations. 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.) Required: Prepare variance analyses for the variable and fixed costs. Materials ore purchased as they are used. (Do not round intermediate calculations. Indicate the effect of each variance by selecting " F " for fovorable, or " U " for unfavorable. If there is no effect, do not select either option.)