Start with a simple thought. A right that nobody can enforce is only a promise on paper. The framers knew that, so they did not stop at listing rights in Part III. They built the enforcement machinery into Part III as well, and pointed it at the Supreme Court. That single design choice is what both statements describe from two sides.
Two extra points support the reading. Dr Ambedkar called Article 32 the heart and soul of the Constitution and said it was the one article he would not agree to drop. Article 32(2) equips the Court with the writs of habeas corpus, mandamus, prohibition, quo warranto and certiorari, which are the tools a guardian needs.
Let's summarize:
Both statements are true and R explains A, so option (A) is correct.