Betty Is Being Sued for Malpractice Because She Used an Outmoded

Betty is being sued for malpractice because she used an outmoded standard that caused her to inadequately protect a patient. Betty's defense is that at the time she received radiography training 20 years ago, the technique she used was the only one taught. She even has her old textbook to prove this. The most likely response to this defense is the assertion that:

A) Betty may be personally liable for failing to keep current in new techniques.
B) because Betty can prove that she learned her technique in school, it is acceptable, though not preferable, that she use it.
C) inadequate time and money are the only excuses considered to be good reasons for being unprepared for changes in a field; neither applies to Betty's case, so she is liable.
D) a and c.
E) none of the above.