I need some help with this question please.

Question 2 2.5 pts B D Economic Probability State Very poor 0.1 Poor 0.2 Average 0.4 Good 0.2 Very 0.1 good 30% 20% 10% -25% -5% 15% 10% 0% 25% 15% 0% 35% -10% 55% 35% a. Based on the table above, construct an equal-weighted (50/50) portfolio of Investments B and C. What is the expected rate of return and standard deviation of the portfolio? b. Now construct an equal-weighted (50/50) portfolio of Investments B and D. What is the expected rate of return and standard deviation of the portfolio? Part A: E(R) for BC portfolio: Note: format answer is 12.3% SD for BC portfolio: Note: format answer is 1.2% Part B: E(R) for BD portfolio: Note: format answer is 12.3% This includes a trailing zero (if needed). SD for BD portfolio: Note: format answer is 1.2%