Given below are two statements:
Statement I: At the base of urinary bladder. there is an inverted triangular area called trigone.
Statement II: Three layers of dartos tunic muscles are present in the wall of urinary bladder.
In the light of above two statements, choose the correct options given below.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.