Using the Hertzsprung-Russell diagram in Figure 12-7 in the text, and the mass-luminosity relationship for main-sequence stars shown in Figure 12-15 in the text, which of these lists is the correct sequence of stars in INCREASING order of mass? 
Definitions:
Agents
Individuals or entities authorized to act on behalf of another, typically in business transactions.
Agency Relationship
A legal relationship in which one party, the agent, is authorized to act on behalf of another, the principal, in business transactions with third parties.
Independent Contractor
An individual or entity contracted to perform work for another entity as a non-employee, retaining control over how the work is completed.
Employee And Agent
Individuals who perform work for another person or entity under an agreement where the employer has the right to control the details of work performance.
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