The value of ‘ g ’ at a particular point is `9.8 m//s^(2)` . Suppose the earth suddenly shrinks uniformly to half its present size without losing any mass. The value of ‘ g ’ at the same point (assuming that the distance of the point from the centre of earth does not shrink) will now be
A. `4.9 m//sec^(2)`
B. `3.1 m//sec^(2)`
C. `9.8 m//sec^(2)`
D. `19.6 m//sec^(2)`