Given below are two statements: one is labeled Assertion (A) and other is labeled Reason (R).

Assertion (A): Females infected with venereal diseases may remain undetected for long.                        

Reason (R): In reproductive tract infections, the infected females may often be asymptomatic.

In the light of above statements, choose the correct answer from the options given below.

Both (A) and (R) are true, and (R) is the correct explanation of (A).

Assertion (A) states that females infected with venereal diseases may remain undetected for long. 

Reason (R) provides an explanation for this by stating that in reproductive tract infections, the infected females may often be asymptomatic. Asymptomatic individuals may not show noticeable symptoms of the infection, leading to the disease going undetected for an extended period. Therefore, both the assertion and the reason are true, and the reason explains why the assertion is true.