A message is encrypted using public key cryptography to send a message from sender to receiver. Which one of the following statements is True?

In public key cryptography, every user has two keys:

$Public\ key$ and $Private\ key$

To send a secret message to receiver, sender encrypts the message using receiver's public key.

Then only receiver can decrypt it using receiver's private key.

So, the true statement is:

Sender encrypts using receiver's public key.