The Ministry of Education and the State Ethnic Affairs Commission jointly issued the Guiding Outline of National Unity Education in Schools (for Trial Implementation), requiring primary and secondary schools across the country to offer special national unity education courses. Strengthening the education of national unity in the new period is conducive to students of all ethnic groups consciously fulfilling their obligations of safeguarding national unity and national unity. Among the four options of ABCD, only B meets the meaning of the question.