What is the sign that Chinese nursing education is included in the national formal education system?

A、Establishmentofthecentralnursingeducationcommittee;
B、Establishmentofthecentralrednurseschool;
C、Theopeningofanursingschool;
D、Thebeginningofmodernnursingeducation;
E、Establishmentofthenurseschoolcurriculum