From Largest to Smallest:
A) Prokaryotic Cell $\rightarrow$ Eukaryotic Cell $\rightarrow$ Virus
B) Eukaryotic Cell

From largest to smallest:

A) prokaryotic cell $\rightarrow$ eukaryotic cell $\rightarrow$ virus
B) eukaryotic cell $\rightarrow$ prokaryotic cell $\rightarrow$ virus
C) eukaryotic cell $\rightarrow$ virus $\rightarrow$ prokaryotic cell
D) virus $\rightarrow$ eukaryotic cell $\rightarrow$ prokaryotic cell