Required: According to the standards, what cost for plastic should have been incurred to make 3, 600 helmets? How much greater or less is this than the cost that was incurred? (Round Standard kilograms of plastic per helmet to 2 decimal places.) Break down the difference computed in (1) above into a materials price variance and a materials quantity variance.(Round your actual materials price to two decimal places, and round your final answers to the nearest whole dollar. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i. e, zero variance).)