Indicate whether each of the following descriptions better applies to enveloped (E) or nonenveloped (N) viruses. Your answer would be a four-letter string composed of letters E and N only, e.g. NNNN.
( ) They include retroviruses.
( ) They include adenoviruses.
( ) To leave the cell, they normally lyse it.
( ) They are more sensitive to treatment with detergents, heat, or drying.