Use the table below to answer the following questions.

Table $11\mathrm{.}1\mathrm{.}2$

$\backslash$table$[[\backslash$table$[[$Disposable$],[$Income$],[($dollars$)]],\backslash$table$[[$Consumption$],[$Expenditure$],[($dollars$)]]],[325,325],[400,375],[475,425],[550,475],[625,525]]$

Refer to Table $11\mathrm{.}1\mathrm{.}2.$ When saving is zero, what is the level of disposable income?

a$.$ $$400$

b$.$ $$325$

c$.$ $$550$

d$.$ $$475$

e$.$ $$625$