The following standards have been established for a raw material used to make product O$84$:

Standard quantity of the material per unit of output $7\mathrm{.}9$ meters

Standard price of the material $ $19\mathrm{.}00$ per meter

The following data pertain to a recent month's operations:

Actual material purchased $4,200$ meters

Actual cost of material purchased $ $84,420$

Actual material used in production $3,900$ meters

Actual output $580$ units of product O$84$

The direct materials purchases variance is computed when the materials are purchased.

Required:

a$.$ What is the materials price variance for the month?

b$.$ What is the materials quantity variance for the month?

$($Indicate the effect of each variance by selecting $"$F$"$ for favorable, $"$U$"$ for unfavorable, and "None" for no effect $($i$.$e$.,$ zero variance$).$ Input all amounts as positive values.$)$