Why does wheel of fortune uses the letters R S T L N E in its final puzzle?

Question

In the final puzzle on wheel of fortune the contestants start out with the letters R S T L N in the final puzzle,why?

Answer 1

The show has been on for years, and since those are the most used letters, that's what everyone always picked. They finally decided just to give you those letters, and let you pick more. >

Answer 2

They used to let the contestants pick their own letters, 5 consonants and one vowel, but everyone learned the strategy of picking the most commonly used. So it became too redundant and offered nothing in the way of entertainment since everyone knew what was going to happen.

Answer 3

I think that those are the most common letters either in the english language or that are guessed on the show. It just eliminates those letters for them.

Answer 4

In English, those are the most often used consonants and the most often used vowel.

Answer 5

because those were the letters people mostly picked when they got to choose their own.