Hello I need help with this Q.

9. (06.03 MC) Why do private businesses underproduce public goods? (3 points) 0 They are non-excludable, and so it is difficult to earn prots by producing the good. 0 They are rivalrous, and so only one producer can supply the good. 0 They are excludable, and so there are too few consumers available to buy the good. 0 They are non-rivalrous, and so market power will limit output of the good. 0 They are non-affordable, and so there are no consumers willing to purchase the good