Dependency-chain approach:
Each of these income measures is derived from the one before it, so the sequence can be fixed by tracing what each figure needs as an input rather than defining every term separately. Gross National Product (GNP) is the broadest, self-contained figure - it does not depend on any of the others - so it must come first. National Income (NI) is obtained only after GNP is known (by removing depreciation), so it must follow GNP. Personal Income (PI) in turn needs NI as its starting point (adjusting for undistributed profits, taxes and transfers), placing it third. Finally, Disposable Personal Income (DPI) is simply PI minus personal taxes, so it can only be computed last.
Following this input-output chain gives GNP -> NI -> PI -> DPI, i.e. (C), (B), (D), (A), which is option (4).