Nevin purchased goods for ₹ 25,000 from Sherin on April 1, 2019. Sherin drew upon Nevin a bill of exchange for the same amount payable after three months. On the due date Nevin met his acceptance. Record necessary journal entries in the books of Sherin and Nevin in the following cases: a) When the bill was retained by Sherin till the date of its maturity b) When the bill was endorsed to her creditor Thompson c) When the bill was sent by Sherin to her bank for collection one week before maturity.