(i) A – x is the letters in the word reap
A ={R, E, A, P} = {A, E, P, R}
(ii) B – x is the letters in the word paper
B = {P, A, E, R} = {A, E, P, R}
(iii) C – x is the letters in the word rope
C = {R, O, P, E} = {E, O, P, R}
Every element of set A is present in set B
Set C is not equal to Set A and B.