If 30 ml of `H_2` and 20 ml of `O_2` react to form water, what is left at the end of the reaction ?

Assertion (A) : If 30 mL of H_(2) and 20 mL of O_(2) react to form water, 5 mL of H_(2) is left at the end of the reaction. Reason (R ): H_(2) is the limiting reagent.

Assertion (A) : If 30 mL of H_(2) and 20 mL of O_(2) react to form water, 5 mL of H_(2) is left at the end of the reaction. Reason (R ): H_(2) is the limiting reagent.