Final answer:
The intersection of plane A and plane S will be point X. The intersection of lines n and k is point X. Therefore, point X is the intersection of both plane S and line n.
Step-by-step explanation:
The intersection of plane A and plane S will be point X. The intersection of lines n and k is point X.
Therefore, point X is the intersection of both plane S and line n, making the correct answer choice D.