The high overall level of medical decision making requires which of the following?

A. reflects more complicated coordination on the part of the physician performing the E/M service but does not pose an excessive risk to the patient
B. reflects a relatively uncomplicated process of medical decision making
C. reflects a very intricate process of difficult or extreme decisions, difficult coordination of diagnostic tests or results, complex diagnosis or diagnoses, or convoluted management options
D. reflects a more complicated combination of medical decision-making elements but does not warrant a significant or substantial level of medical decision making

C