The `pK_(a)` of acteylsalicylic acid (aspirin) is `3.5`. The pH of gastric juice in human stomach is about `2-3` and the pH in the small intestine is about 8. Aspirin will be:
A. ionised in the small intestine and stomach
B. ionised in the stomach and almost unionised in the small intestine
C. unionised in small intensity and stomach
D. completely ionised in small intestine and stomach