Statement 1:  $H_{3}P{O}_2$ responds to Tollens reagent whereas $H_{3}P{O}_4$ does not produce a 
                       Silver mirror with it.
Statement 2: Hypo phosphorus acid has two reducing hydrogens  

Statement 1 is false and Statement 2 is true

Statement 1 and Statement 2 are true and Statement 2 is the correct explanation of Statement 1

Statement 1 and Statement 2 are true and Statement 2 is not the correct explanation of Statement 1

Statement 1 is true and Statement 2 is false