Imagine You Read a Brief Newspaper Article That States Research

Imagine you read a brief newspaper article that states research has shown that eating grilled cheese sandwiches triples the risk of developing asthma. You love grilled cheese sandwiches and you don't want to develop asthma. In evaluating whether you should give up the sandwiches, what is the one piece of additional information that would be MOST useful to you?

A) Was the research conducted by a psychologist or medical doctor?
B) What is the base rate of asthma?
C) What do scientists think is the causal factor that relates grilled cheese and asthma?
D) Is the difference large enough to have practical implications?