need help with 20 and 21

Saved Question 20 (2 points) Hi-Tech Appliances and Comfy Mattress Co. recently raised bonds with the following characteristics: Company Time to Maturity Par Value Coupon Rate Bond Rating Heesh Appliances 10 years $1,000 4% BBB Comfy Mattress Co. 15 years $1,000 6% AA Which of the following may explain the difference in yields? Select all that apply. Higher default risk for Comfy Mattress Co. than Hi-Tech Appliances, Higher maturity risk for Comfy Mattress Co. than Hi-Tech Appliances. Differences in expected inflation. Higher beta for Comfy Mattress Co. than Hi-Tech Appliances. Dan 2 of 28 Question 2 points) Stock Expected Return Standard deviation of returns Wacky Widgets 10% 15% Yummy Tummy Food 8% 14% Delivery In Your Face 12% 17% Videoconferencing Fine-n-Fresh Grocery 6% 9% Consider the risk and return characteristics of the following stocks. Which is the best to hold on a stand alone basis? Wacky Widgets Yummy Tummy Food Delivery