Correct Answer - Option 4 : Cannot be determined
Given:
Four players A, B, C, and D have to form into two pairs.
No pair can play together more than seven times in a row.
A and B have played seven games in a row.
C and D have three in a row.
C does not work with A.
Then, C and D can still play 4 times.
B either will play with C or D.
Hence, it cannot be determined exactly.