please answer fast only MCQ no need for justifcation

If a and c are two vectors of the same length, what does the following code find? function [p] = functionl (a.c) p=sum(a*c); end O It finds the dot product of a and c O It does nothing since there is an error It finds the sum of the components of a and c O It finds the cross product of a and c 2x To plot the function f(x) = over [0,5], we use: O fplot(exp(-2x)/x,[0,5]) O *) fplot('exp^(-2*x)/x",[0,5]) fplot(exp^(-2*x) //,[0,5]) O fplot ('exp(-2*x)/x",[0,5])