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.
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.
E) No states have laws prohibiting employers from firing employees who smoke.