DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 Three different substances were taken and tested with litmus paper. The results are given below. Based on the results answer the questions 43 to 48. Type of Litmus X Y Z Red litmus turns blue no change no change Blue litmus no litmus turns red no change Which of the following could be the substance Z?

• A.  \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]         
• B.  \[\text{HN}{{\text{O}}_{\text{3}}}\]
• C.  \[\text{KOH}\]    
• D.  \[{{\text{H}}_{\text{2}}}\text{O}\]