Examine what is the legal position, as to the following:

i. M offered to sell his land to N for ` 28,000/-. N replied purporting to accept the offer and enclosedachequefor`8,000/-.Healsopromisedtopaythebalanceof ` 20,000/- in monthly installments of ` 5,000/- each.

ii. A offered to sell his house to B for ` 10000/-. B replied that he can accept the house for only ` 8,000/-. A rejected B's counter offer to buy the house for ` 8,000/-. B later changed his mind and is now willing to buy the house for ` 10,000/-.