When Bombarded by a Proton, a Lithium-7 Nucleus Reacts to Form

When bombarded by a proton, a lithium-7 nucleus reacts to form two $\alpha$ particles.How many kilojoules per gram of Li-7 are released during this nuclear transformation?( 1 kJ = 1000 kg m²/s²)

A) 1.7 * 10⁹ kJ/g
B) 3.9* 10⁴ kJ/g
C) 5.6 F* 10^-9 kJ/g
D) 7.9 * 10⁵ kJ/g
E) 2.4 * 10⁸ kJ/g