What video format is supported by all devices and browsers?

What should be true for salts used in password hashes?

A. A single salt should be set so passwords can be de-hashed as needed. B. A single salt should be used so the original salt can be used to check passwords against their hash. C. Unique salts should be stored for each user. D. Unique salts should be created every time a user logs in.

Any user can add system environment variables or change the values of existing ones.

Answer the following statement true (T) or false (F)