Water is very precious for a healthy life. It is commonly known that drinking water should be between 5.5 to 9.5 pH. I read that the most healthy drinking water should be 7.34-7.45 pH (as human blood). Here, I have two question:

1.) Which drinking-water is more healthy for human, A=[5.5pH, 7pH] or B=[7pH, 9.5pH]. I guess that it will be B, is it right?

2.) Which drinking-water is more healthy for human, C=[lower than 5.5pH] or D=[higher than 5.5pH]. Eventually, I can ask which of these two water (C or D) is less unhealthy. I guess that it will be D, is it right?

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