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In vitro fertilization is the technique of

A) Substituting the nucleus of ovum by nucleus from a vegetative cell and inducing it to develop into an embryo and subsequently into an individual organism in laboratory conditions                         

B) Fertilization of ovum by sperms collected from selected male

C) Fertilization of ovum in laboratory conditions outside the female body

D) Transfer of ovum of one female into the fallopian tube of another female