The figure below shows data from Doppler effect studies of three different stars: A, B, and C. Assume that all the stars are similar in mass to the Sun. Which star has the planet with the smallest semimajor axis? 
Definitions:
Economic Profit
The distinction between gross revenue and total expenditures, inclusive of both explicit and latent costs.
Normal Rate
Typically refers to a benchmark interest rate considered to be standard based on historical averages, often used by central banks.
Market Period
The short timeframe in which the supply of a good is fixed, typically because production cannot be adjusted quickly in response to changes in demand.
Dog Kennels
Structures or shelters for housing dogs, can be residential for private use or commercial for boarding.
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