Explain :A) capitalB) salesC) discountD) purchaseExplanation:CapitalThe amount of cash, goods or assets which is initially invested by proprietor while commencing business is called capital. It is invested to earn profits. In other words, the excess of assets over liability is capital.SalesWhen purchase goods are sold in order to earn a PROFIT are called sales. When goods are sold for cash it is called cash sales and goods sold on credit are called credit sales.PurchasesGoods bought for resale are called purchases. This may be in FORM of raw material or finished goods. Purchase of assets is not called purchases because assets are not purchased for resale.DiscountConcession a rebate allowed by a businessman 2 its customer is called a DISCOUNT. it may be of two TYPES: –a. Trade discountWhen a trader allows a CONCESSION to its customers on the list price, it is known as trade discount. It is not recorded in the books. It is stated in the invoice.b. Cash discountWhen a trader allows a concession to the customer to make payment in cash or by cheque, it is known as cash discount. It is recorded in the books. When cash discount is allowed customer is required to pay the less due amount, so it encourages the customer to pay as early as possible.