Answer : Option A
Explaination / Solution:
(2x)(2y) = 8 = 23
Applying the law of indices
x + y = 3----- eqn 1
(9x)(3y) = 81 = 34
2x + y = 4----- eqn 2
Solving the two equations simultaneously we get x=1
And substituting the value of x in any of the two equations y=2
Hence option A is correct