Which of the following alkanes gives a significant fragment peak at m/z = 57? 
Definitions:
Net Present Value Method
A financial analysis tool used to evaluate the profitability of an investment, taking into account the time value of money.
Discount Rate
This interest rate is used in the framework of discounted cash flow analysis to determine the present worth of cash flows anticipated in times ahead.
Simple Rate of Return
A financial metric that measures the efficiency of an investment as the annual income divided by the initial investment cost.
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