One microgram of matter converted into energy will give

90 J $9 × 10^3$ J $9 × 10^{10}$ J $9 × 10^5$ J

$9 × 10^{10}$ J

$E=\Delta m c^2=10^{-6} × \left(3 \times 10^8\right)^2= 9 × 10^{10}$ J