This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Gynaecology & Obstetrics
[{'content': 'Minimum sperm count for normal semen analysis according to WHO: \nSelect and explain. \nA. 2 million/mL, B. 5 million/mL, C. 10 million/mL, D. 15 million/mL', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Parameters (WHO criteria 2010) Parameter Lower Reference Limit Semen volume (ml) 1.5 Sperm concentration (106/ml) 15 Total sperm number (106/ejaculate) 39 Progressive motility (PR,%) 32 Total motility (PR + NP, %) 40 Vitality (live sperms, %) 58 Sperm morphology (NF,%) 4 pH* >/=7.2 Leucocyte* (106/ml) <14 MAR/Immunobead test* (%) <50', 'role': 'assistant'}]