Correct option is D
HCF of fractions = HCF of numerator/LCM of denominator
Fractions 36/75, 48/50 and 72/30= 12/25, 24/25 and 36/15
=> LCM (25, 25, 15) = 150
12=2×2×3
24=2x2x2x3
36=2×2×3×3
HCF of 12, 24 and 36 is = 2x2x3=12
Required HCF = 12/150.