Macroeconomics problem, why choose C?

Suppose transfer payments are greater than Social Security contributions, corporate taxes, and retained earnings combined. In that case,
(A) NDP will be greater than GDP
(B) NI will be greater than GDP
(C) PI will be greater than NI
(D) DPI will be greater than PI
(E) PI will be greater than GDP
the answer is C
I do not know why and please help me

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