Which Describes the Main Mechanism of Action of Alkylating Agents

Which describes the main mechanism of action of alkylating agents?

A) The agents can become incorporated into the structures of DNA and RNA, resulting in a disruption of nucleic acid function.
B) When cancer cells attempt to synthesize proteins, RNA, or DNA metabolic pathways are disrupted and the cancer cells die or their growth is slowed.
C) They change the shape of the DNA double helix and prevent nucleic acid from completing normal cell division.
D) They either directly or indirectly bind to cancer cells causing an activation of the immune response which results in the destruction of the cancer cells.