Question

Consider the following statements about India’s AstroSat and its new discovery: 1. AstroSat observed an event around the black hole X-ray binary system “Swift J1727.8-1613”. 2. A unique finding was the detection of “aperiodic modulation” of high-energy X-rays. 3. The frequency of quasi-periodic oscillations in high-energy X-rays remained constant. Which of the above statements is/are correct?

A 1 and 2 only
B 2 and 3 only
C 1 and 3 only
D 1, 2, and 3
E None of the above
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