Amoebas are unicellular organisms, while human beings are multi-cellular and the most intelligent of organisms. however, both are classified as eukaryotes. how will you justify this reasoning?

a. though unicellular, amoebas have all the necessary cell organelles and a well-defined nucleus, therefore fulfilling the characteristics of eukaryotes.

b. though unicellular, amoebas have a nucleoid and no cell organelles, therefore fulfilling the characteristics of eukaryotes.

c. though unicellular, amoebas have a nucleolus but not a nucleus and all the cell organelles except mitochondria, therefore fulfilling the characteristics of eukaryotes.