[单选] 下列ReactJs组件，哪个是正确的（）1、function Logo（props）{return （<div><span> {{ props ．logo }}</span><span>A JavaScript library</span> </div>）}2、function Logo（props）{return （<div><span>{ props ．logo } </span><span>A JavaScript library</span> </div>）}3、function Logo（props）{return （<div><span> { props ．logo ， A JavaScript library }</span> </div>）}4、function Logo（props）{return （<div><span> { props ．logo }</span> </div><div><span> A JavaScript library</span> </div>）}