D is the best thing to do.
A Keratosis is a skin growth that can be crusty and scaly. It can be located on the bold scalp, ears, face, lips, backs of hand and forearm, neck, shoulders or any part of body usually exposed to the sun.
It would have to be either a or b... I'm leaning more towards A, though
Lungs with cause a reaction which feels like chocking and it’s worse with bronchial asthma trust me I know from personal experience