1 knife man, 24 years old, with a knife wound on the back of his hand and bleeding from the wound. The simplest and most effective ways to stop bleeding on the spot are: a) forearm tourniquet to stop bleeding b) local pressure bandage c) upper arm tourniquet to stop bleeding d) wrist tourniquet to stop bleeding e) suture the wound immediately.

Er Qu, a 7-year-old with bloody stool 10 day, has blood on the surface of stool, sometimes there are blood drops after stool, no abdominal hernia, and normal stool frequency. The first diagnosis to be considered is internal hemorrhoids B: rectal prolapse C: rectal polyp D: anal sinusitis E: anal fissure.