3 [!--empirenews.page--]=2 [!--empirenews.page--],為達消費者均衡,則對兩財貨的購買組合應為何?
(A)多買X財,少買Y財(B)多買Y財,少買X財
(C)多買X財,多買Y財(D)少買X財,少買Y財