What is the best course of action when there is a measles epidemic in a nearby municipality?
A. Give measles vaccine to babies aged 6 to 3 months
B. Give babies aged 6 to 11 months one dose of 100,000 IU of Retinol
C. Instruct mother to keep their babies at home to prevent disease transmission
D. Instruct mothers to feed their babies adequately to enhance their babies resistance