Rectify the following errors :
(a) Credit sales to Mohan Rs. 7,000 were posted to Karan.
(b) Credit purchases from Rohan Rs. 9,000 were posted to Gobind.
(c) Goods returned to Rakesh Rs. 4,000 were posted to Naresh.
(d) Good returned from Mahesh Rs. 1,000 were posted to Manish.
(e) Cash sales Rs. 2,000 were posted to commission account.