"text": "The average age of the credit customers is approximately how many years, with a standard deviation of about how many years? This means that most customers are within a range of 24.1 to 46.9 years old.  customers have a history of paying off their existing credits.",  
"options": [  
    "A. 35.5, 11.4",  
    "B. 37.7, 11.4",  
    "C. 35.5, 12.8",
    "D. 37.7, 12.8" 
],  
"correct_answer": "A"