The correct options are
A Dinesh bargained and got a 500 rupees shirt for 400 rupees.
C Shardul's mother stopped him from taking two chocolates, thereby saving money.
If any person purchases more things than the amount he posseses, then that person is in debt. Thus, Ajay owns a debt of 10 rupees. In case of Dinesh, he saved 100 rupees. Shardul's mother saved some money by not buying the second chocolate.