Rectify the following errors :

(a) Credit Sales to Mohan Rs. 7,000 were recorded in purchases book.

(b) Credit Purchases from Rohan Rs. 9,00 were recorded in sales book.

(c) Goods returned to Rakesh Rs. 4,000 were recorded in the sales return book.

(d) Goods returned from Mahesh Rs. 1,000 were recorded in purchases return book.

(e) Goods returned from Nahesh Rs. 2,000 were recorded in purchases book.