Which of the following forces has the smallest size
{"Image DocumentName": "Which of the following forces has the smallest size?", "Image ImageDescription": "A. a 20 N force acting east. B. a 50 N force acting up. C. a 70 N force acting west. D. a 70 N force acting down.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}