Solution
✅ Correct Option: 4
To start with, we can check C or D, since it has three possible options from given alternatives.
D.
Possible options are I, II, or IV.
I.
Luckily, you get it on the first try :)
Now, since D-I is a pair, Options 2 and 3 are eliminated.
Now, let's check for C.
It may take a while to solve these.
By observation, we find A. are comparatively easy to solve, providing a unique solution.
Possibility for A is II or III.
II.
Since A-II is not a possible pair, A-III is the only possible solution.
Hence, correct option is Option 4
Cross-verifying A-III pair: III.
Thus, adding the two, we get