Which of the following virus causes 'Chickenpox'?AVariola VirusBVaricella zosterCHerpes simplex virusDNone of the aboveAnswer: B. Varicella zoster Read Explanation: Chickenpox is an infection caused by the varicella-zoster virus. It causes an itchy rash with small, fluid-filled blisters. Chickenpox is highly contagious to people who haven't had the disease or been vaccinated against it.Read more in App