Consider the following statements in relation to Earth's topmost layer.1. Transverse earthquake waves move at a speed of 3.5 km / second in that layer.2. The specific gravity is 2.73. It is shallowest under Continents and deepest under Oceans.4. Abundance of mangnesium.Which of the above statements are correct ?

Consider the following statements in relation to Earth's topmost layer

1.	Consider the following statements in relation to Earth's topmost layer.1. Transverse earthquake waves move at a speed of 3.5 km / second in that layer.2. The specific gravity is 2.73. It is shallowest under Continents and deepest under Oceans.4. Abundance of mangnesium.Which of the above statements are correct ?
A.	1 and 2
B.	2 and 3
C.	3 and 4
D.	1, 2 and 4
Answer» B. 2 and 3