Given below are two statements, one labelled Assertion (A) and the other Reason (R). Choose the correct answer.

Green hydrogen, made using renewable electricity, is indeed vital for reaching global carbon neutrality by 2050, so the assertion is true.

Hydrogen gas does hold far more energy per unit mass than coal, so the reason is also a true statement.

Green hydrogen helps carbon neutrality mainly because its production and use emit no carbon dioxide, not because of its energy density.

So the high energy content, while true, is not the correct reason for its climate role.

Both statements are independently correct while the causal connection between them does not hold.

Green hydrogen is produced by electrolysis of water powered by solar or wind energy.