Slang and 'correct' vocabulary

correct vocab
A.if you go in for an interview, and speak correct english, you'll have a better chance of getting an job.

B.People understand you more.

C.This would help you on a job.

D.more people will think highly of you.

E.Most of all, you'll be more comfortable with yourself!

slang
A.You'll have a bitter chance of getting a job.

B.People won't understand you.

C.People, probably wouldn't take you serious.

D.Most of all, you won't sound very smart.