Parker Plaste. Incoiporated, manulactures plastic mats to use with rolling office chairs. lts standard cost information for last yoar followsh Parker Plast/c had the following actual results for the post year. Required: Calculate Parket Plastic's direct materials price and quantity varlances Note: Do not round intermedlate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfovorable, and "None" for no effect (Le, rero varlance)