implied volatility plot

Using the Merton jump formula, generate an implied volatility plot for K = 50, 55, . . . 150.
a. How is the implied volatility plot affected by changing aJ to -0.40 or -0.10?
b. How is the implied volatility plot affected by changing ? to 0.01 or 0.05?
c. How is the implied volatility plot affected by changing sJ to 0.10 or 0.50?