<t>Hello All,I need to price barrier options with Monte Carlo Simulations in GUI. My code is,function [Price,CI] = BlsMCAV(S0,X,r,T,sigma,NRepl)nuT = (r-0.5*sigma^2)*T;siT = sigma * sqrt(T);Veps = randn(NRepl,1);Payoff1 = max(0, S0*exp(nuT+siT*Veps)-X);Payoff2 = max(0, S0*exp(nuT+siT*(-Veps))-X); Di...