What rock band was the first to advertise an album on a billboard?

Here is the question :

WHAT ROCK BAND WAS THE FIRST TO ADVERTISE AN ALBUM ON A BILLBOARD?

Here is the option for the question :

• Led Zeppelin
• Aerosmith
• The Doors
• Pink Floyd

The Answer:

And, the answer for the the question is :

Explanation:

[STC0012992]. Jac Holzman, founder of Elektra Records, signed a promising new rock band called the Doors in 1967. In Los Angeles, Holzman saw a series of billboards along Sunset Boulevard that promoted everything but music. He put up a billboard for his up-and-coming rock band in the hopes that it would catch the attention of radio DJs and encourage them to play the group’s songs. Confession: it was successful.