In a mixed letter coding system, if 'COLD' is coded as '5678' and 'WARM' is coded as '1234', what is the code for 'MOLD'?

A. 5678

In the pattern: X, Y, Z, A, ?, C. What character is missing?

A. B

In a race of 40 participants, E is ranked 12th from the top. If F is ranked 8th from the bottom, what is the total number of participants?

B. 40

Arrange the following words in alphabetical order: Zebra, Antelope, Lion, Tiger.

B. ANTELOPE

If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + C × B?

C. C IS THE SON OF A