Given the following: rt denotes the return of a financial asset and t denotes the standard deviation of returns at time t. Suppose re follows rt= + et with et = Zot where Zt ~N(0,1). 1. Write an ARCH(q) model with q=7 for +. 2. Write an GARCH(gp) model with q=4 and p=4 for . 3. Determine the unconditional variances of ARCH(q) model in (1) 4. Determine the unconditional variances of GARCH(gp) model in (2) 5. Discuss and compare ARCH(q) model and GARCH(q.p) model