In cases where the male partner is unable to inseminate the female or due to very low sperm counts in the ejaculates,this problem can be corrected by which of the following methods?

$IVF$ in which the early zygote with up to $A$ blastomeres is transferred to the Fallopian tube is called $B$.

In the reproduction of a test-tube baby:

In the process of in vitro fertilization,which of the following is transferred into the fallopian tube?

$A$: In test-tube baby programme,ova from wife/donor (female) and sperms from the husband/donor (male) are collected and induced to form zygote under simulated conditions in laboratory.
$R$: Embryos with more than $8$ blastomeres are then transferred to fallopian tube $(ZIFT)$ to complete its further development.

If the male is infertile and the female is normal,which assisted reproductive technology is most appropriate?