Private Markets Would Lead to a ______ Vaccination Rate Because

Private markets would lead to a ______ vaccination rate because:

A) socially optimal; price serves as a signal of marginal benefit and marginal cost.
B) suboptimally high; the external cost of being vaccinated would not fully be taken into account by decision makers.
C) suboptimally low; the external benefit of being vaccinated would not fully be taken into account by decision makers.
D) inequitable; health care services should not be provided based on ability to pay.