What Is the Total Electric Flux Through a Closed Surface $2.0 \mu \mathrm{C}$

What is the total electric flux through a closed surface containing a $2.0 \mu \mathrm{C}$ charge?

A) $2.3 \times 105 \mathrm{~N} \cdot \mathrm{m}^{2} / \mathrm{C}$
B) $1.4 \times 105 \mathrm{~N} \cdot \mathrm{m} 2 / \mathrm{C}$
C) 0
D) $1.8 \times 10^{4} \mathrm{~N} \cdot \mathrm{m}^{2} / \mathrm{C}$
E) $4.5 \times 103 \mathrm{~N} \cdot \mathrm{m} 2 / \mathrm{C}$