Human sperm remains fertile for how many hours in a female genital tract

Human sperm remains fertile for how
many hours in a female genital tract ?
a) 6-8 hrs
b) 12-24 hrs
c) 24-48 hrs
d) 72-96 hrs
Correct Answer - C
Ans. C. 24-48 hrs
A human spermatozoon remains fertile for a total of 24-48 hrs. in the
female genital tract" --Textbook of reproductive system
Ovum remains fertile for 72 hours