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A block 'A' of mass m1 hits horizontally...

A block `'A'` of mass `m_1` hits horizontally the rear side of a spring (ideal) attached to a block `B` of mass `m_(2)` resting on a smooth horizontal surface. After hitting, `'A'` gets attached to the spring.

Some statements are given at any moment of time:
i. If velocity of `A` is greater than `B`, then kinetic energy of the system will be decreasing.
ii. If velocity of `A` is greater than `B`, then kinetic energy of the system will be increasing.
iii. If velocity of `A` is greater than `B`, then momentum of the system will be decreasing.
iv. If velocity of `A` is greater than `B`, then momentum of the system will be increasing.
Now select correct alternative:

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