JEE Main 2023 Physics question

The weight of a body at the surface of earth is 18 N. The weight of the body at an altitude 3200 km above the earth's surface is (given, radius of earth Re = 6400 km):

• (A)8 NCorrect
• (B)19.6 N
• (C)9.8 N
• (D)4.9 N