How was the growth in all food grains after the Green Revolution?

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1. The Green Revolution introduced high-yielding varieties (HYVs), increased irrigation and chemical fertilizers that were concentrated mainly on wheat and rice.

2. As a result the growth rates of different food grains were unequal: $g_{wheat}, g_{rice} \gg g_{millets}, g_{pulses}$ — i.e. wheat and rice saw large yield increases while coarse grains and pulses lagged.

3. Therefore the overall growth in all food grains was not unitary or proportionate across crops but rather unequal across types: it was disproportionate.

FINAL_ANSWER: d

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