Given below are two statements: One is labeled as Assertion A and the other is labeled as Reason R.

Assertion (A) : The possibility of a female becoming a haemophilic is extremely rare.

Reason (R) : Mother of such a female has to be at least carrier and the father should be haemophilic (unviable in the later stage of life).

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

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

Assertion (A) correctly highlights the rarity of females developing hemophilia. Reason (R) supports this, explaining the genetic basis: for a female to have hemophilia, her mother must be at least a carrier, and her father must be hemophiliac. Additionally, severe hemophilia in males may affect their longevity. These factors collectively contribute to the extreme rarity of females being affected by hemophilia.