Tom is driving a cement mixer in a negligent manner. Tom collides with a semi -trailer hauling a Load of artillery shells to a local army base. The collision causes a terrible explosion. The explosion sends several shells into the air, one of which lands a mile away, knocking a tree into a house. Which of the following is true?

A) Tom is liable for the damage to the house because he substantially increased the risk of harm to the surrounding community by negligently operating his cement truck

B) Tom is not liable for the damage to the house because his negligence is not the but for cause of the harm

C) Tom is not liable for damage to the house because his negligence is not the proximate cause of the harm