You are at the grocery store checkout and the line is quite long. The 8 items or less line is open, but you have about 20 items and don't want to go there with too many items. All of sudden, you see another shopper with 20 items go to the 8 item line, so you go as well. According to lecture, your behaviour reflects A. obedience B. response facilitation C. informational influence D. response disinhibition E. desensitization