The diagram below shows the radial velocity curve of a double-line spectroscopic binary. Based on this radial velocity curve, which of the following statements is correct? 
Definitions:
Relocation Costs
Expenses incurred when moving employees from one location to another for work purposes, which can include travel expenses, moving services, and temporary housing.
Union Density
The ratio of the number of union members to the number of potential members, indicating the strength of union representation.
Global Society
An interconnected society facilitated by the globalization process, where information, goods, and services move more freely across national boundaries.
Public Sentiment
The general mood or opinion of the population or a specific group of people about particular issues, events, or subjects.
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