Trini Company set the following standard costs per unit for its single product.

$\backslash$table$[[$Direct materials $(30$ pounds a $$4$ per pound$),$$$120\mathrm{.}00$

Required:

$1.$ Compute the direct materials variance, including its price and quantity variables.

$2.$ Compute direct labor variance, including its rate and efficiency variances.

$3.$ Compute the overhead controllable and volume variances.