Correct option is A
Given: A # B means ‘A is the son of B’
If ‘C − O % M @ P # K’?
If ‘C − O % M @ P # K’?
Symbols | # | % | - | @ |
Relation | Son | Brother | Wife | Father |

From the given information blood relation diagram will be.

So, C is husband's brother's wife of K.
Thus, correct option is (a).