please provide all A and B requrement answer requirement 1 minimum 250 words this is 1 question and requrement is 2 so please give me all A and B answer properly and acurately. this queation belong the subject of security and risk portfolio

Q1) A) Write an article on the Pakistan's economic performance pre & post impact of Covid-19? (Minimum words 250) B) Briefly explain the difference between Morkowitz Modern Portfolio Theory & Single Index Model approaches? What is the basic difference between these two approaches