On the basis of the given data, estimate the value of National Income (NNPFC):
Which of the following are applicable to the individual's expenditure function?
(A) It is homogeneous of degree zero in all prices. (B) It represents the maximum expenditure to achieve a given level of utility. (C) It is non-decreasing in prices. (D) It is concave in prices. Choose the correct answer from the options given below: