When the Actual Price to Purchase a Raw Material on Account

When the actual price to purchase a raw material on account is less than its standard price, the journal entry would include:

A) Credit to Raw Materials; Credit to Materials Price Variance
B) Credit to Accounts Payable; Credit to Materials Price Variance
C) Credit to Raw Materials; Debit to Materials Price Variance
D) Credit to Accounts Payable; Debit to Materials Price Variance