the nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to about 4.1 x 103 Calories. Express this energy equivalence in joules.
a. 1.7 x 104 J
b. 9.8 x 105 J
c. 5.7 x 107 J
d. 9.8 x 102 J
e. None of these is within 5% of the correct answer