Symmetric cryptography is often a desired solution because it is efficient and fast. However, there are some issues with it$.$

Which of the choices below reflects one of those issues?

Symmetric ciphers have been around for thousands of years therefore they are all relatively easy to crack.

Only one key is used, therefore that key must be kept away from unauthorized parties.

Because keys are not used in symmetric algorithms, the cipher must not be disclosed to unauthorized parties.

The public key must be distributed as widely as possible or else symmetric cryptography is ineffective.