A - B means ‘A is the son of B’,
A $ B means ‘A is the sister of B’,
A @ B means ‘A is the daughter of B’ and
A * B means ‘A is the father of B’.
Based on the above information, which of the following means that W is the sister's son of S?
1
W @ E - A $ K * S
2
W - E @ A * K $ S
3
W * E - A $ K @ S
4
W $ E * A - K @ S