Is sunscreen unhelpful for the condition that killed Bob Marley? Please answer step by step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Bob Marley died of acral lentiginous melanoma. Acral lentiginous melanoma occurs on skin that may not have any sun exposure.
So, the final answer is yes.