The electronegativity of oxygen is higher than that of sulfur. Yet,$H_2S$ is acidic while $H_2O$ is neutral. The reason for this is .........

• A
  Water is a highly associated compound.
• B
  The molecular weight of $H_2O$ is higher than that of $H_2S$.
• C
  $H_2S$ is a gas under normal conditions while $H_2O$ is a liquid.
• D
  The $H-S$ bond is weaker than the $H-O$ bond.