Which of the following molecules is nonpolar

I’m studying for my Chemistry class and need an explanation.

you submission MUST include all of the following:

a. demonstrate you understand the concepts, processes, and steps to answer the questions; describe why the incorrect answers are incorrect and why the correct answer is correct (15 points)

b. the correct answer to the question (5 points)

c. properly cite at least one relevant and credible reference you used to solve determine why the incorrect answers are incorrect and why the correct answer is correct. (5 points)

  1. Which of the following molecules is nonpolar?

A. NH3

B. XeF4

C. H2O

D. CH3Cl

E. CH2Cl2