unDEr whiCh typE oF mArkEt struCturE ArE thE proDuCtion AnD priCing AltErnAtivEs oF A Firm most AFFECtED By thE DECisions oF its CompEtitors
A．

A. monopoly.

B．

B. pErFECt CompEtition.

C．

C. oligopoly.