let's take the smallest pair: 24 and 25: together they make 49, 3 numbers away from the goal.
Since this means we need to increase both by more than 1 (so by 2): so they need to be 26 and 27 (answer D): their sum is 53.
it can't be less than this since both numbers get decreased so the sum of 25 and 26 is 51, which is too little.
