Read the following context and choose the best option to answer the question.
Context: still bitchy , internally grumbling about woman in my row using empty seat as bag storage . hoped she 'd be verbally bitchslapped by flight attendants , but no luck . ate dinner / snack , which was surprisingly good for airline food . tried to stay awake by reading and doing sudoku , but became twitchy and very sleepy .
Question: Why is good airline food surpising ?
Options: 
- Food on airlines are often surprising because they come in a sort of popping Jack in the Box .
 - Usually food on airlines is bad because they do n't have open flames to cook on .
 - None of the above choices .
 - you do n't order the food , you just take whatever they give you as a " surprise " .


Usually food on airlines is bad because they do n't have open flames to cook on .