In a class of 100 students, 37 study Mathematics, 32 study Physics and 31 study chemistry. 9 students study Mathematics and Physics. 12 students study Mathematics and chemistry and 28 students study none of these subjects. Illustrate the information in Venn diagram and find A. The number of students who study all the three subjects B. The number of students who study only the mathematics, only Physics and only chemistry C. How many students study exactly two subjects.​