Active Rab 5 is a component of endosome membranes and helps to mediated endosme to endosome homotypic fusion events. We saw a movie of Rab 5 mediated endosomal fusion in class. What would the result be if Rab 5 was stuck in the GTP form?

A. Endosomes would be coated with coat proteins
B. Endosomes would get smaller
C. Endosomes would get larger
D. Endosomes would stay the same size
E. SNARES would never interact