Study the given diagram carefully and answer the question. The numbers in different sections indicate the number of persons. Which of the following statements is correct on the basis of the above diagram?
AThe number of girls who are also gymnasts is 41.
BThe number of gymnasts who are also medal winners is 34.
CThe number of medal winners who are also girls is 27.
DThe number of girls who are neither gymnasts nor medal winners is23.