Working from the principle that it is wrong to put others in harm's way, which peripheral ethical issue listed below should be most relevant to your decision?

Question $10$ options:

a$)$ Selling low$-$quality masks puts the health and wellbeing of medical workers at risk. Potentially harming others is unethical.

b$)$ You risk harming your relationship with your friend if you do join their business venture. Friendship is important.

c$)$If you do not sell the low$-$quality masks, then they just become a wasted resource. Waste is bad.

d$)$By implying the $3$M corporation is your supplier, you risk harming the reputational capital of $3$M$.$ You should not harm the reputational capital of corporations.