Which Demonstrates Better Resolution

Multiple Choice

Which demonstrates better resolution?

A) measuring two bacteria arranged end to end as individually having a length of 2μm
B) measuring two yeast cells as individually having a diameter of 10μm
C) observing two adjacent bacteria as individually having a width of 0.3μm
D) observing a clump of algae 0.5mm by 0.75 mm
E) measuring a flea as 1.2mm at the longest point