Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: Cells are the microscopic building blocks of organisms. Cells are so small that they can only be seen under a microscope. Cells are so small, they are the building blocks of organisms.
 The question and answer:
user
Cells are what, so they are the building blocks of organisms?
Options:
- (A) Most plants
- (B) so small
- (C) all matter
- (D) homogenous
- (E) so deadly
- (F) so fortunate
- (G) so big
- (H) bacteria
The answer is (B)
assistant