Consider the following statements:
In a seismograph, P waves are recorded earlier than S waves.
In P waves, the individual particles vibrate to and from in the direction of wave propagation whereas in S waves, the particles vibrate up and down, at right angles to the direction of wave propagation.
Which of the statements given above is/are correct?
a. 1 only
b. 2 only
c. Both 1 and 2
d. Neither 1 nor 2