Three independent projects are available for a secret government agency. The estimated costs associated with each alternative are given below. Use the conventional B- C ratio method to determine which alternatives), if any, should be selected at an interest rate of 7% per year. Assume a project life of 20 years and a B- C ratio of at least 1 for evaluation. 
Definitions:
Negative Reinforcement
A technique used to increase desired behaviors by removing an unpleasant stimulus when the desired behavior is performed.
Positive Reinforcement
A behavior modification technique that involves rewarding a desired behavior, thereby increasing the likelihood that the behavior will be repeated.
Negative Punishment
Negative punishment involves removing a desirable stimulus to reduce the likelihood of a particular behavior being repeated.
Classical Conditioning
A learning process that occurs through associations between an environmental stimulus and a naturally occurring stimulus, leading to a learned response.
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