问题详情

Whats the real meaning of the phrase "in the ring" (Line 6, Para. 3)？

A．Getting the ring as a symbol of the non-GMO label.

B．Fighting with other companies in a boxing ring.

C．Calling other other companies to apply for the non-GMO certification.

D．Competing with other companies for the non-GMO certification.

请帮忙给出正确答案和分析，谢谢！