The diagram shows the positions of the air particles due to propagation of sound, represented by straight lines, at a particular instant from P to Q.
Which of the following statements correctly depicts the pressure variation with respect to distance?
A The lines which are closed to one another represent rarefaction which is a low pressure region.
B The lines which are far apart from one another represent compression which is a low pressure region.
C The lines which are far apart from one another represent rarefaction which is high pressure region.
D The lines which are closed to one another represent compression which is a high pressure region.