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

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

(21, 225, 9)

(12, 49, 2)

(14, 64, 2)

(21, 225, 9)

(12, 49, 2)

THE LOGIC FOLLOWED HERE IS :

[( IST NUMBER +IIIRD NUMBER ) ÷ 2 ] ² = IIND NUMBER

AS

[( 21  + 9 ) ÷2 ] ² = IIND NUMBER

[ 30 ÷ 2 ]² = IIND NUMBER

[ 15]² = IIND NUMBER

225 = IIND NUMBER

AND

[( 12  + 2 ) ÷ 2 ] ² = IIND NUMBER

[ 14 ÷ 2 ]² = IIND NUMBER

[ 7]² = IIND NUMBER

49 = IIND NUMBER

SIMILARLY

(14, 64, 2)

[( 14  + 2 ) ÷ 2 ] ² = IIND NUMBER

[ 16 ÷ 2 ]² = IIND NUMBER

[ 8 ]² = IIND NUMBER

64 = IIND NUMBER