The ___i___ is the male gamete which is small and ___ii___, and the ___iii___ is the female gamete which is large and ___iv___. The statement above is completed by the information in row ______.
Row i ii iii iv
A. sperm motile ovum non-motile
B. ovum non-motile sperm motile
C. sperm motile ovum motile
D. ovum non-motile sperm non-motile