SAT一道句子提升题 求教

SAT一道句子提升题 求教Nicknamed the supergrain of the future,quinoa is a complete protein,（one that contains all the necessary amino acids and is） high in fiber.A) protein,one that contains all the necessary amino acids and isD) protein that contained all the necessary amino acids and also is为什么D不对?D的意思和A表达相比有何区别?在其他题目里看见过and also这个组合正确所以应该不是这两个词的问题…………