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In a single-lined spectroscopic binary, where we only measure the period P and one radial velocity amplitude K1, what can we determine about the unseen

In a single-lined spectroscopic binary, where we only measure the period P and one radial velocity amplitude K1, what can we determine about the unseen companion? [5 pts] A. Its minimum mass B. Its maximum mass C. Its minimum radius D. Its maximum radius E. none of the above

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