For the Month of April,Thorp Co For the Month of April,actual Direct Labour Hours Amounted to Data

For the month of April,Thorp Co.'s records disclosed the following data relating to direct labour:
$\begin{array}{|l|r|}\hline \text { Actual cost } & \$ 10,000 \\\hline \text { Rate variance } & \$ 1,000 \text { favourable } \\\hline \text { Efficiency variance } & \$ 1,500 \text { unfavourable } \\\hline\end{array}$
For the month of April,actual direct labour hours amounted to 2,000.In April,what was Thorp's standard direct labour rate per hour?

A) $4.50.
B) $4.75.
C) $5.00.
D) $5.50.