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

(5, 2, 23)

(6, 2, 34)

(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 /subtracting / 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) 

(3, 2, 7)

(5, 2, 23)

(6, 2, 34)

The logic followed here is :

(Ist number)² - second number = IIIrd number

as

(5)² - 2 = 23

(6)² - 2 = 34

Same as (3, 2, 7)

(3)² - 2 =  7