The profit of sale of non-current asset is calculated as the difference between its: a. Net realizable value and sale proceeds b. Net book value and sale proceeds c. Net book value and purchase price d. Purchase price and sale proceeds What is common about source documents, the origin of the information that is recorded into the accounting books a. Th origin of the information that is taken from the accounting books b. The bookkeeper's name, the amount, a transaction date, a reference number c. The amount, the names of both businesses, date, a description of the transaction d. A transaction date, the amount, a description of the transaction, the document shape