Assertion: In acute constipation, purgative containing magnesium salts are generally used.
Reason: The osmotic effect of `Mg^(2+)` in the intestinal lu- men prevents Water reabsorption from intestine. `Mg^(2+)` increases the solute concentration in the intestinal lumen because `Mg^(2+)` is absorbed very slowly

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion is true but the reason is not the correct explanation of the assertion, then mark (2).
C. If Assertion is true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4).

Answer

A