Rolling resistance of a wheel depends upon(i) Vehicle load (ii) Grade (iii) Ground conditions Of these statements

Rolling resistance of a wheel depends upon(i) Vehicle load (ii) Grade

1.	Rolling resistance of a wheel depends upon(i) Vehicle load (ii) Grade (iii) Ground conditions Of these statements
A.	Only (i) is correct
B.	(i) and (ii) are correct
C.	(i) and (iii) are correct
D.	(ii) and (iii) are correct
Answer» D. (ii) and (iii) are correct