This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Intrauterine insemination means implantation of: 
Select and explain. 
A. Semen, B. Washed semen, C. Million of sperm, D. Fertilized ova
B: Washed semen
Answer: B: Washed semen 
Explanation: Intrauterine insemination is placement of 0.3mL of washed processed and concentrated sperms (devoid of seminal plasma)/semen into the intrauterine cavity by transcervical catheterization.