Read the following context and choose the best option to answer the question.
Context: She was always smiling , always happy , for no apparent reason . laughing even when no one was making jokes , just loving life so much . I envied her .
Question: Why would someone laugh when nothing was funny ?
Options: 
A. People might laugh a lot if they have a rich inner life and are pleased by little things in life .
B. People laugh if they are choking on something .
C. People laugh to put other people " Off " and frighten them .
D. None of the above choices .


A