Which of the Following Is True Regarding Whether Employers May

Which of the following is true regarding whether employers may discriminate against smokers?

A) There is a federal law specifically prohibiting employers from firing employees who smoke, but it does not address the hiring of those who smoke.
B) There is a federal law specifically prohibiting employers from firing or from refusing to hire employees who smoke.
C) There is a federal law specifically prohibiting employers from firing employees who smoke and from refusing to hire employees who smoke, and it also requires that employers have a designated smoking area.
D) There is no federal law prohibiting employers from firing employees who smoke although some states have laws protecting rights of smokers.
E) Neither federal nor state laws prohibit employers from firing employees who smoke.