challenge: What did the Deputy Education Minister Wong Kah Woh encourage teachers and students to do on 1 January 2024?
  
  A. Only students with COVID-19 symptoms to wear face masks
  B. Wear face masks and staff members to do self-tests if they have COVID-19 symptoms
  C. Remove their face masks in classrooms
  D. Stop taking self-tests for COVID-19
  Answer: 