A、CliEnt with BiCuspiD AortiC vAlvE hAs sEvErE stEnosis AnD is sChEDulED For vAlvE rEplACEmEnt. whilE tEAChing thE CliEnt ABout his ConDition AnD upComing surgEry, thE nursE shows him A hEArt illustrAtion. whiCh vAlvE will BE rEplACED A、A B、B C、C D、D