Select the set in which the numbers are related in the same way as are the numbers of the following sets.

(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g 13 – Operations on 13 such as adding /deleting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is NOT allowed)

(2, 3, 25)
(3, 4, 49)

(4, 5, 81)

(2, 3, 25)
(3, 4, 49)

The logic followed here is :

( Ist number  + second number)² = IIIrd number

as

( 2  + 3)² = 25

( 3  + 4)² = 49

Same as in (4, 5, 81)

(4  + 5 )² = 81