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 /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)
(60, 17, 13)
(62, 14, 17)

​(60, 17, 13)
(62, 14, 17)

Logic: ​(Second + Third) × 2 = First Number.

Set 1: (60, 17, 13)

(17 + 13) × 2 = 30 × 2 = 60 

Set 2: (62, 14, 17)

(14 + 17) × 2 = 31 × 2 = 62 

Now apply this rule to the options:

Option A: (56, 15, 13)

→ (15 + 13) × 2 = 28 × 2 = 56 

Option B: (43, 9, 12)

→ (9 + 12) × 2 = 21 × 2 = 42 ≠ 43 

Option C: (55, 18, 9)

→ (18 + 9) × 2 = 27 × 2 = 54 ≠ 55 

Option D: (57, 15, 14)

→ (15 + 14) × 2 = 29 × 2 = 58 ≠ 57 

Thus, the correct option is: (a)