For question $7-8-9$ and $10$ use this information

The Baby Clothing Company makes a single product and uses standard costing. Some data concerning this product for the month of May follow:

Labour rate variance $$7,500$ favourable

Labour efficiency variance $$12,000$ favourable

Variable overhead efficiency variance $$5,000$ favourable

Number of units produced $10,000$

Standard labour rate per direct labour hour $$12$

Standard variable overhead rate per direct labour hour $$5$

Actual labour hours used $15,000$

Actual variable manufacturing overhead costs $$78,290$

$7.-$ What was the variable overhead spending variance for May?

A$)$ $ $1710$ favourable

B$)$ $ $1710$ unfavourable

C$)$ $ $3290$ unfavourable

D$)$ $ $3390$ favourable

$8.-$ What was the actual direct labour rate for May in dollars per hour?

A$)$ $$12,50$

B$)$ $$12\mathrm{.}00$

C$)$ $$11\mathrm{.}50$

D$)$ $$11\mathrm{.}75$

$9.-$ What was the total standard cost for direct labour for May?

A$)$ $$168000$

B$)$ $$192000$

C$)$ $$161000$

D$)$ $$120000$

$10.-$ What was the total standard cost for variable overhead for May?

A$)$ $$50000$

B$)$ $$80000$

C$)$ $$56000$

D$)$ $$40000$