If someone in the family is suffering from a problem of acidity

If someone in the family is suffering from a problem of acidity, which of the following would you suggest as a remedy: lemon juice, vinegar or baking soda solution ? Which property do you think of while suggesting the remedy ?

  1. I suggest baking soda solution. As acidity can be neutralized by baking soda solution. We can use it.
  2. Acidity is caused due to excess secretion of hydrochloric acid in the stomach. Baking soda is a mild base and it can neutralize the acid in the stomach.