Which the following is the correct way to define a constant?

Question

Admin · Accepted Answer

const AGE = &lsquo;25&rsquo;;

Admin · Answer

constant AGE = &ldquo;25&rdquo;;

Admin · Answer

const $AGE = &ldquo;25&rdquo;;

Admin · Answer

constant AGE = &lsquo;25&rsquo;;

Q. Which the following is the correct way to define a constant?