What happens to a batters at-bat if he is ejected before it is over?

Question

A batter receives a strike (Its not a strikeout though), argues with it, and gets ejected. What happens?

Answer 1

A pinch hitter is sent in.  He has the same count.  If he strike out or makes an out in coults against the batter who was ejected.  If he get a walk or hit it is credited to the pinch hitter.

Answer 2

They send in another batter off the bench to hit. The new batter gets the same count the ejected player left with.  

Answer 3

It's just like pinch hitting in the middle of an at-bat or if a guy got injured by swinging like some guys' oblique muscles.

Answer 4

Just a pinch hitter comers in. I seen a spot already once where the batter wasn't ejected but he was inured during his swing. I think it was darrin Erstad broke his leg or ankle and they just brought in a pinch hitter with the same count.