The source of data for the recording of sales day book of a business enterprise is:
A. Returns inward note
B. Returns outward note
C. Official receipt
D. Payment voucher
E. Invoice

E

Explanation:
Option E is correct because an invoice is the source document used to record sales transactions in the sales day book. The invoice contains details of the goods sold, the quantity, price, and the total amount due, which are essential for recording sales.