________ are currency traders who seek to minimize their risk of exchange-rate fluctuations, often by entering into forward contracts or similar financial instruments

The Lagrange multiplier values in sensitivity analysis for nonlinear programming models are valid only at the point of the optimal solution

a. True b. False

In case of normal swings in the risk-free rate, option prices are not very sensitive to changes in the risk-free rate

Indicate whether this statement is true or false.