Which of the following statements regarding “commercial speech” like advertising is true?

a. Commercial speech has absolute First Amendment protection like political speech, since the Constitution states that Congress shall make no law abridging the freedom of speech.

b. Commercial speech has full First Amendment protection (subject to strict scrutiny).

c. Commercial speech has partial First Amendment protection (subject to rational basis review).

d. Commercial speech has partial First Amendment protection (subject to intermediate-level scrutiny).

e. Commercial speech has no First Amendment protection.