A School Had Tried Very Hard to Uphold the Requirement

A school had tried very hard to uphold the requirement for all children to be vaccinated.However,state law allowed parents to exempt their child if they had a religious reason for refusal.Two children have been diagnosed with chickenpox.Which will be the most likely result?

A) Adults as well as children in the neighborhood will get chickenpox
B) All the children who played with the two sick children will probably get chickenpox
C) All the unimmunized children will probably come down with chickenpox
D) Few children will get chickenpox because of herd immunity.