Acceptance takes place as against the proposer, when
(a) When the letter of acceptance is posted by the acceptor
(b) When the letter of acceptance is received by the proposer
(c) When the offeree, writes the letter of acceptance, but doesn't post it
(d) All the above
(a) When the letter of acceptance is posted by the acceptor
(b) When the letter of acceptance is received by the proposer
(c) When the offeree, writes the letter of acceptance, but doesn't post it
(d) All the above