Sexual reproduction results in variation of the progeny from the parents. What do you think are the appropriate reasons?

• A. Since sexual reproduction involves only gene from a single parent which undergoes modifications to produce different traits in the progeny
• B. Sexual reproduction involves gene from both the parents which undergoes modifications to produce traits that vary from the parent
• C. It is due to variation in the time
• D. Parents decide the traits of the progeny and design them accordingly