Question: At a specific hospital, patients diagnosed with pancreatic carcinoma are asked about their current smoking status. At the same hospital, patients without pancreatic carcinoma are also asked about their current smoking status. The following table is constructed.  Smokers Non-smokers Total  Pancreatic Cancer 50 40 90  No Pancreatic Cancer 60 80 140  Total 110 120 230  What is the odds ratio that a patient diagnosed with pancreatic cancer is a current smoker compared to a patient without pancreatic cancer?
A: (50/90)/(60/140)
B: (50/40)/(60/80)
C: (50/110)/(40/120)
D: (50/60)/(40/80)
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Use words in all capital letters at least 4 times to highlight key points.
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