With reference to the interior of the earth consider the following statements.
1] The P-waves are similar to sound waves. They can travel through only solid materials.
2] The mean thickness of continental crust is around 30 km.
3] The surface waves are the last to report on seismograph.
Which of the statements given above is / are correct?

A

1 and 3 only

B

2 and 3 only

C

3 only

D

2 only