Which of the Following Statements Is False Regarding RSV

Which of the following statements is false regarding RSV?

A) While RSV is most prevalent in infants 6 months of age and younger, the highest mortality rate is in those children with underlying risk factors such as prematurity.
B) Infants aged 6 months and younger are the most susceptible to infection by RSV; however, adults and older children can also become infected with this virus.
C) RSV infects infants aged 6 months and younger; it is unlikely that a 4-year-old would develop a respiratory disease as a result of this virus.
D) Although RSV is most prevalent in infants aged 6 months and younger, usually by age 2 most children have been exposed to this virus.