Stated below are a list of accounting documents each identified by a letter stated in front. State in the grid on the right the appropriate identifying letter to name the document being described:

(a) Invoice 

(b) Receipt 

(c) Statement 

(d) Credit note 

(e) Cash sales memo 

(f) Voucher

(i) Document sent to customers every month to confirm the transactions during the month

(ii) A written acknowledgement of amount received

(iii) One or more written evidence of transactions accounted for

(iv) A note to inform a customer that his account has been credited with any returns

(v) The evidence usually available to support a cash purchase

(vi) A document advising the customer that his account has been debited