Suppose that GARCH(1,1) parameters have been estimated as a = 0.000002, = 0.04, and = 0.94. The current daily volatility is estimated to

Suppose that GARCH(1,1) parameters have been estimated as a = 0.000002, α = 0.04, and β = 0.94. The current daily volatility is estimated to be 1.3%. Estimate the volatility per annum that should be used to price a 20-day option.