Answer:
Option A
Explanation:
Clearly, in the second series, 1 occurs at the same position as D occurs in the first series.
So, 1 corresponds to D, Thus, the first question mark below D is to be replaced by 1.
Now, in the third series, c at the eighth place corresponds to A in the first series,
while c at the sixth place corresponds to 2 in the second series. So, 2 corresponds to A.
Thus, the second question mark below A is to be,replaced by 2.
In the third series, a at the first place corresponds to B in the first series.
And a at the third place corresponds to 4 in the second series. So, 4 corresponds to B.
Thus, the question mark below B is to be replaced by 4.
Now, only 3 remains. So, 3 correspbnds to C. Thus, the question mark below C is to be replaced by 3.
Thus, DACB corresponds to 1,2,3,4. Hence, the answer is (a).