What are the benefits that t he reforms of Wang Anshi brought to the country and the farmers?
A.
The farmlands of the country got measured and assessed, and meanwhile a lot of concealed farmlands were discovered.
B.
A lot of irrigation projects were built and vast farmlands got irrigated.
C.
The tax revenue of government was increased to some extent.
D.
The farmers' living standard was greatly improved and they were very satisfied with the new policies.