Sirius a and B Are Two Stars at the Same

question 12

Multiple Choice

Sirius A and B are two stars at the same distance from the Earth.In this binary system,Sirius A is much brighter but Sirius B is much hotter.From this information,what can you conclude about the two stars?

• A)Sirius B must be much smaller than Sirius A.
• B)Sirius B must be much larger than Sirius A.
• C)Sirius B must be much more massive than Sirius A.
• D)Sirius B must be much less massive than Sirius A.

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