Thanks . But yeah , lung x - rays were good but there was still the sound of " rice crispies " ( as my doctor put it ) in my left lung so I was given a nebulizer treatment . It ... uh ... helped . I 'll leave it at that .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason why they needed lung xrays ?
Options:
- They were going to be having surgery .
 - They had an infection .
 - None of the above choices .
 - They needed one for insurance purposes .


They had an infection .