28. Which of the following best describes the properties of protons, neutrons, and electrons?
A. Protons and neutrons have a positive charge while electrons have no charge.
B. Protons have a positive charge, neutrons and electrons have a negative charge.
C. Protons and electrons have a positive charge while neutrons have no charge.
D. Protons have a positive charge; neutrons have zero charge; electrons have a negative
charge.