Each of these questions has an Assertion...

Each of these questions has an Assertion (A) and a Reason (R).
Assertion (A) The steam engine was invented by James Watt.
Reason (R) There was a problem of taking out water from flooded mines.

If both 'A' and 'R' are true and 'R' is the correct explaination of 'A'

If both 'A' and 'R' are true but 'R' is not the correct explaination of 'A'

If 'A' is true but 'R' is false

If 'A' is false but 'R' is true

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Each of these questions has an Assertion (A) and a Reason (R).
Assertion (A) The steam engine was invented by James Watt.
Reason (R) There was a problem of taking out water from flooded mines.