Miss Milly needs to use 600 L of oxygen daily in order to meet her metabolic needs. If she needs to burn 5 Cal in order to use 1 L of oxygen, what is Miss Milly’s estimated daily caloric requirement?
A. 3000000 cal/day
B. None of the above
C. 3000 kcal/day
D. All of the above mentioned
E. 3000 Cal/day