why is thE sEConD thEory somEtimEs rEFErrED to As thE mArs thEory
A．EArth's moon usED to orBit mArs.
B．mArs wAs CApturED By thE grAvitAtionAl FiElD oF thE sun,
C．A plAnEt thE sizE oF mArs ColliDED with EArth.
D．mArs is lArgEr thAn EArt