Lyzza, who is engaged in the business of buy and sell of used cars, received a letter from Jean appointing him as agent for the sale of P's two (2) used cars. Lyzza received the letter on Sept. 1, 2019 but up to now, he has not made any reply to Jean. The silence of ______________.

a Means that he is still considering the option of accepting the offer or not

b Means that he refused to accept the agency

c Can be considered as implied acceptance of the agency

d Cannot be considered as implied acceptance of the agency

explain