Help please According to the data what kind of substance is gastric juice?

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 strong acid since the blue litmus paper turns red and the pH is 1.7

D.
it is a weak base since the blue litmus paper turns red and the pH is 1.7