Based on the head-to-toe assessment procedure paper, what are the actions taken to assess cardiovascular system? Select all that apply.
选项：

A:Pressing the nail bed on both sides at the same time
B:Pressing down the ankle both sides at the same time
C:Palpate the wrist area below the thumb both sides at the same time
D:Pinch up the skin on the fore arm both sides at the same time