One of the following is not a shortcoming of GDP?
a. It does not include illegal activities like underground betting, paying workers in cash or illegal gun sales
b. It does not include goods that are produced in a country within a year.
c. It does not include illegal activities like underground betting, paying workers in cash or illegal gun sales.
d. It does not include important non financial actions like a parent staying at home to take care of a child or family member.