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Periodic review policies require

A) more safety inventory than continuous review policies for the same level of product availability. B) less safety inventory than continuous review policies for the same level of product availability. C) the same safety inventory as continuous review policies for the same level of product availability. D) no more safety inventory than continuous review policies for the same level of product availability.

Which of the following is true for a long position in an option

A. Both gamma and vega are negative B. Gamma is negative and vega is positive C. Gamma is positive and vega is negative D. Both gamma and vega are positive