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

A:The wealth of a person and his lifetime income can only be used for his lifetime consumption.;
B:The wealth that a person owns at beginning (initial wealth) and his lifetime income can only be used for his lifetime consumption and as a bequest to the next generation.;
C:The wealth that a person owns at beginning (initial wealth) and his lifetime income can only be used for his lifetime consumption.;
D:The wealth of a person and his lifetime income can only be used for his lifetime consumption and as a bequest to the next generation.