Health , ! alan chooses not to wear sunscreen because the oils build up on his skin. what is alan trying to prevent, and what is he failing to prevent? a. alan is trying to prevent skin cancer but failing to prevent acne. b. alan is trying to prevent acne but failing to prevent skin cancer. c. alan is trying to prevent psoriasis but failing to prevent eczema. d. alan is trying to prevent eczema but failing to prevent psoriasis.