The table below shows the pH of four body fluids and the resulting color when each is tested with Red and Blue Litmus Paper. Body fluid

pH

Red litmus

Blue litmus

Blood

7.4

Turns blue

No change

Bile

8.2

Turns blue

No change

saliva

6.8

No change

Turns red

Gastric fluid (in stomach)

1.7

No change

Turns red

According to the data, what kind of substance is gastric fluid?

A.
It is a weak acid since the blue litmus paper turns red and the pH is 1.7

B.
It is a strong base since the blue litmus paper turns red and the pH is 1.7

C.
It is a weak base since the blue litmus paper turns red and the pH is 1.7

D.
It is a strong acid since the blue litmus paper turns red and the pH is 1.7

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