JEE Main 2018 Physics question

It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is ; while for its similar collision with carbon nucleus at rest, fractional loss of energy is . The value of and are respectively :

• (A)(0.89, 0.28)Correct
• (B)(0.28, 0.89)
• (C)(0, 0)
• (D)(0, 1)