Bulda Printing began operations on January 1. On January 7, Bulda purchased supplies on account for $2,000. At the end of January, Bulda had $1,200 of supplies on hand. The proper journal entry for the January 7 transaction would: Question options: A) include a debit to Supplies for $2,000. B) include a credit to Supplies for $400. C) include a debit to Supplies Expense for $400. D) include a debit to Supplies for $600. E) None of these.