Let L₁ Be a Recursive Language, and Let L₂ Be

Multiple Choice

Let L₁ be a recursive language, and let L₂ be a recursively enumerable but not a recursive language. Which one of the following is TRUE?

A) ( L₁) ' is recursive and (L₂) ' is recursively enumerable
B) ( L₁) ' is recursive and (L₂) ' is not recursively enumerable
C) ( L₁) ' and (L₂) ' are recursively enumerable
D) ( L₁) ' is recursively enumerable and (L₂) ' is recursive