Under a standard cost, when recording the use of direct materials in the production process, the debit to work-in-progress inventory is?

Under a standard cost system, when recording the use of direct materials in the production process, the debit to Work-in-Process Inventory is O A. O B. OC. O D. actual quantity times standard cost per unit of direct materials standard quantity for actual production times standard cost per unit of direct materials actual quantity times actual cost per unit of direct materials standard quantity for actual production times actual cost per unit of direct materials