The Graph Below Shows That Post Vaccination Program,the Number of Adult

Multiple Choice

The graph below shows that post vaccination program,the number of adult meningitis cases is

A) strongly correlated with the number of childhood meningitis cases; this appears to be related to the increased vaccination rates in children.
B) not correlated with the number of childhood meningitis cases; there appears to be no relationship to the increased vaccination rates in children.
C) weakly correlated with the number of childhood meningitis cases; there appears to be no relationship to the increased vaccination rates in children.
D) strongly but negatively correlated with the number of childhood meningitis cases; this is caused by the increased vaccination rates in children.