This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Which of the following statement is/are true of all paramyxoviruses - 
Select and explain. 
A. They contain a single stranded RNA genome of negative polarity, B. Envelope is derived from the host cells plasma membrane, C. They have a cytoplasmic site of replication, D. They enter the body by the respiratory route
A: They contain a single stranded RNA genome of negative polarity
Answer: A: They contain a single stranded RNA genome of negative polarity 
Explanation: Paramyxoviruses are linear ssRNA REF:<\p> MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.506