Which of the following must be LOST from an RNA for it to be transported out of the nucleus?

Which of the following must be LOST from an RNA for it to be transported out of the nucleus?

Which of the following must be LOST from an RNA for it to be transported out of the nucleus? 150 150 Nyagu

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I’m working on a biology question and need an explanation to help me understand better.

Which of the following must be LOST from an RNA for it to be transported out of the nucleus?

Poly-A-binding proteins.

Rev response elements.

Proteins involved in splicing.

Cap binding complex (Lac operon activator)