Indicate whether each of the following processes is topologically similar (Y) or not similar (N) to formation of intralumenal vesicles in multivesicular bodies. Your answer would be a four-letter string composed of letters Y and N only, e.g. YYYY.
( ) Fission of peroxisomes
( ) Formation of clathrin-coated vesicles
( ) Budding of HIV from infected cells
( ) Cytokinesis