The correct option is B Acids, bases and salts
Acids and bases are electrolytes and are corrosive in nature. Acids are sour in taste while bases are bitter in taste. Acids and bases react with each other to produce water and another class of electrolytes known as salts. This reaction is known as neutralisation reaction.
So, ‘X’, ‘Y’ and ‘Z’ are acids, bases and salts respectively.
Hence, the correct answer is option (b).