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When a litmus paper is dipped in soap so...

When a litmus paper is dipped in soap solution, its colour changes to blue. However, when the litmus paper is dipped in vinegar, its colour changes to red. It can be concluded from the given observation that

A

soap solution is acidic, whereas vinegar is basic

B

soap solution is basic, whereas vinegar is acidic

C

soap solution as well as vinegar is acidic

D

soap solution as well as vinegar is basic

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