Tick the correct punctuation
marks :
according to a survey chandigarh is the
cleanest city of India
A According to a survey Chandigarh is the
cleanest city of India.
B According to a survey, Chandigarh is the
cleanest city of india.
C According to a survey chandigarh is the
cleanest city of india.
D According to a survey, Chandigarh is the
cleanest city of India.
B is also a correct answer