请教问题.

At the time of Mexican agrarian revolution, the most radical faction, that of Zapata and his friends, proposed a return to communal owership of land, to what has been a pre-Columbian form of ownship respected by Spaniards.

a) land, to what has been a pre-Columbian form of ownship respected by Spaniards.

B) land, a aform of ownship of pre-columbian and respected by the Spaniads

C)land, respeceted by Spaniards and a pre-Columbian form of owership

D) land in which a pre-Columbian form of ownership repected by spaniards

E).......

请问答案是A,而非D,请教分析原因,谢谢