When Assigning Direct Labour Costs to the Production Process,which of the Following

When assigning direct labour costs to the production process,which of the following shows the effect on work in process inventory?

A) Credited for standard quantity usage of direct labour for actual production times actual cost per hour
B) Debited for actual quantity of direct labour times standard cost per hour
C) Credited for standard quantity of direct labour used for actual production times standard cost per hour
D) Debited for standard quantity of direct labour used for actual production times standard cost per hour