In some region, the gravitational field is

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In some region, the gravitational field is zero. The gravitational potential in this region

A

Must be variable

B

Must be constant

C

Cannot be zero

D

Must be zero

In some region, the gravitational field is zero. The gravitational potential in this region

$I = \frac{{ - dV}}{{dr}}$. If $I = 0$ then $V =$ constant