This is an insurance question regarding Mean Standard Deviation graph, use the knowledge to provide an answer in terms of R.

Olivia is an investor who has only two primary assets, asset A and asset B, in which to hold her wealth, which is normalised to be 1. Asset A has mean mA=4 and standard deviation A=2, while asset B has mean mB=2 and standard deviation B=1. Olivia can choose as her portfolio any mixture between the two assets defined by , where is the fraction of her wealth that is held in asset A (so a fraction 1 is held in asset B ). Portfolios are restricted to satisfy 01. Olivia has constant absolute risk aversion preferences, with absolute risk aversion parameter equal to R, and her expected utility of a portfolio with mean m and standard deviation is given by v(m,)=m2a2R. Olivia makes her portfolio decisions maximising this function. 4. Finally, now assume for this question and the next one that AB=0. (a) Find the equation for the efficient portfolio curve. (b) Find Olivia's optimal investment strategy , and the coordinates of her optimal portfolio, (m,). (c) If R=23, what is Olivia's optimal portfolio? What is Olivia's level of expected utility at her optimal portfolio