Benita Incurred a Business Expense on December 10,2010,which She Charged

Benita incurred a business expense on December 10,2010,which she charged on her bank credit card.She paid the credit card statement which included the charge on January 5,2011.Which of the following is correct?

A) If Benita is a cash method taxpayer,she cannot deduct the expense until 2011.
B) If Benita is an accrual method taxpayer,she can deduct the expense in 2010.
C) If Benita uses the accrual method,she can choose to deduct the expense in either 2010 or 2011.
D) Only b.and c.are correct.
E) a. ,b. ,and c.are correct.