As per IRC 37: 2012, the fatigue life of a flexible pavement consisting of granular base and sub-base depends upon1) Resilient Modulus of bituminous layers.2) Horizontal tensile strain at the bottom of the bituminous layer3) Mix design of bitumen4) Vertical subgrade strainWhich of the above statements are correct?

As per IRC 37: 2012, the fatigue life of a flexible pavement consistin

1.	As per IRC 37: 2012, the fatigue life of a flexible pavement consisting of granular base and sub-base depends upon1) Resilient Modulus of bituminous layers.2) Horizontal tensile strain at the bottom of the bituminous layer3) Mix design of bitumen4) Vertical subgrade strainWhich of the above statements are correct?
A.	1, 2 and 4 only
B.	1, 3 and 4 only
C.	1, 2 and 3 only
D.	2, 3 and 4 only
Answer» D. 2, 3 and 4 only