Which of the following statements is correct about gravitational potential energy?
V = −GMmr is defined with zero at infinity, and work is needed to separate masses, making option 2 correct. As per NCERT, applying relevant law/formula with correct units and sign convention leads to It is zero at infinite separation. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: Halliday & Resnick, Fundamentals of Physics, 11th ed., Chapter 13: Gravitation.