A 57-year-old maintenance worker comes to your office for evaluation of pain in his legs. He has smoked two packs per day since the age of 16, but he is otherwise healthy. You are concerned that he may have peripheral vascular disease. Which of the following is part of common or concerning symptoms for the peripheral vascular system?A) Intermittent claudicationB) Chest pressure with exertionC) Shortness of breathD) Knee pain