Assertion: The odor of urine is mainly due to the presence of urea.
Reason: Urea is converted into ammonia by bacteria, which causes the characteristic odor of urine.
Assertion and reason are both true, and reason is an accurate account of assertion.
Both assertion and reason are accurate, but reason does not adequately explain assertion.
The assertion is correct, but the reasoning is incorrect.
Both the assertion and reason are incorrect.
The assertion is partly true. While urea is a major contributor to the odor of urine, other substances such as creatinine and hormones may also contribute. The reason is also partly true, as urea can be converted into ammonia by bacteria present in the urinary tract, which can cause the characteristic odor of urine. However, some medical conditions such as diabetes and liver disease can also affect the odor of urine.
Option a is the correct answer.