Suppose That in a Closed Economy GDP Is $11 Trillion,consumption

Suppose that in a closed economy GDP is $11 trillion,consumption is $7 trillion,taxes are $3 trillion and the government runs a surplus of $1 trillion.What are private saving and national saving?

A) $4 trillion and $1 trillion
B) $4 trillion and $5 trillion
C) $1 trillion and $2 trillion
D) $1 trillion and $1 trillion