When two identical balls b1 and b2 which have equal masses are moving with velocities V and 2V respectively, the ratio of inertia and momentum of b1 to b2 are:- a.) 2:1 and 1:2
b.) 1:1 and 1:2
c.) 1:1 and 1:1
d.) 1:1 and 2:1

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