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Many exoplanets have been discovered by ...

Many exoplanets have been discovered by the transit method, where is one monitors, a dip in the intensity of the parent star as the exoplanet moves in front of it. The exoplanet has a radius R and the parent star has radius 100 R. If `I_0` is the intensity observed on earth due to the parent star, then as the exoplanet transits

A

the minimum observed intensity of the parent star is `0.9 I_0`

B

the minimum observed intensity of the parent star is `0.99 I_0`

C

the minimum observed intensity of the parent star is `0.999 I_0`

D

the minimum observed intensity of the parent star is `0.9999 I_0`

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