The financial logic contained in the intertemporal budget constraint equation based on personal life-cycle is

A、Thewealthofapersonandhislifetimeincomecanonlybeusedforhislifetimeconsumption.;
B、Thewealththatapersonownsatbeginning(initialwealth)andhislifetimeincomecanonlybeusedforhislifetimeconsumptionandasabequesttothenextgeneration.;
C、Thewealththatapersonownsatbeginning(initialwealth)andhislifetimeincomecanonlybeusedforhislifetimeconsumption.;
D、Thewealthofapersonandhislifetimeincomecanonlybeusedforhislifetimeconsumptionandasabequesttothenextgeneration.