Let $M$ be the message to be sent by using RSA cryptosystem. If $(n,e)$ is the public key and $(n,d)$ is the private key, which of the following is the encryption function that will yield the cipher text that corresponds to $M?$

$E(M)=M^e$modn

$E(M)=M^d$modn

$E(M)=M^e,$mod$(p-1)(q-1)$

$E(M)=M^d$mod$(p-1)(q-1)$