Correct option (A) I only
Explanation:
(I) This relation is reflexive relation because every natural no. divides square of itself
a R a ⇔ a divides a2
(II) not symmetric eg. 5 R 10 ⇒ 5 Divide 100
But 10 R 5 ≠ 10 Divide 25
(III) Not transitivity for example
if 8 R 4 & 4 R 2 ≠ 8 R 2
only (I) Option