PPSC Past Paper Assistant Director Planning & Development Department-2019 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsA firm buys goods on credit, which document does the firm use to record this?A. Credit Notes B. Purchase Invoices C. Sale Invoice D. Supplier’s Invoice Beri-Beri is a deficiency disease caused by an unbalanced diet low in?Fill in the Blank: We see _____ a box at opera?