What are the charges of protons, neutrons, and electrons?

• A. protons = –1, neutrons = +1, electrons = –1
• B. protons = 0, neutrons = +1, electrons = +1
• C. protons = +1, neutrons = +1, electrons = –1
• D. protons = +1, neutrons = 0, electrons = –1
• E. protons = 0, neutrons = –1, electrons = +1

Answer: (D)