Karl and Grady are managers of two product lines for Brewster Company.One of them is a candidate for promotion based on performance.Using the data below,determine who had the better performance using performance measures such as net income,profit margin,and return on investment.Show your calculations and support your answer. 
Definitions:
Background Research
The initial phase of investigation that gathers existing information or data on a topic before embarking on new research.
Hypothesis
An assumption or proposition that is made on the basis of limited evidence as a starting point for further investigation.
Experimentation
The process of trying out new ideas, concepts, or strategies to test hypotheses and gain insights that can lead to innovation or improvement.
Careful
Paying close attention to detail and being cautious to avoid mistakes or accidents.
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