A Beam of Protons and a Beam of Neutrons of the Same

Multiple Choice

A beam of protons and a beam of neutrons of the same energy are both harmful to living tissue.The beam of neutrons,however,is less harmful.Why?

A) Neutrons are much smaller and lighter than protons and would do less damage.
B) Neutrons travel at reduced speed compared to the speed at which protons travel.
C) Neutrons carry no electric charge and thus have a greater likelihood of passing through the tissue.
D) All of the above are reasons why neutrons are less harmful.