Which of the following one is not the challenge faced by China's environmental emergency management?

A、Highincidenceofenvironmentalemergenciesandseveresituationofemergencymanagement;
B、Establishmentofenvironmentalemergencylinkagemechanism;
C、Thelegalsystemofenvironmentalemergencyisnotperfectandtheroleoflegalsupportisinsufficient;
D、Theconstructionofenvironmentalemergencymanagementorganizationlagsbehindandlacksinitiative