please help me solve all 4 finance questions, will rate positive!! please only attempt if you will answer all. thank you and will return the favor!

What is Walmart's Total Operating Expenses stated as a % of Total Revenue - 2010 versus 2009? a) 2009 = 28.2%; 2010 = 27.5% b) 2009 = 18.2%; 2010 = 19.5% Oc) 2009 = 38.2%; 2010 = 39.5% d) 2009 - 48.2%; 2010 = 47.5% Based on the Income Statement above, which of the following is a TRUE statement regarding Walmart's operating expenses? a) Walmart's total operating expenses has went down in 2010 (compared to 2009). Ob) Walmart's Marketing and Sales expense went down in 2010 (compared to 2009) c) Walmart's General & Administrative expenses went up considerably in 2010 (compared to 2009) d) Marketing and Sales expense is the biggest cause of the change in Walmart's operating expenses 2010 versus 2009. Look again at the Income Statement above. What is Walmart's Operating Profit Margin in 2010 compared to 2009? a) 2009 = 26.65%; 2010 = 25.87% Ob) 2009 = 6.65%; 2010 = 5.87% Oc) 2009 = 12.65%; 2010 = 13.87% d) 2009 = 19.65%; 2010 = 20.87% Has Walmart's Operating Profit Margin gotten better or worse in 2010 compared to the previous year? a) It has gotten better - it went down. b) It has gotten worse - it went down. c) It has gotten better - it went up. d) It has gotten worse - it went up