How could you find out how many floating point numbers there are on your computer?

A: There are uncountably infinite floating point numbers, so there's no real answer here.

B: You could set each bit in the floating point representation to $0$ and then to $1,$ and iterate over all possible assignments.

C: You would need to use approximate comparisons, since you don't want to directly check the results of floating point math for equality.

D: There are countably infinite floating point numbers, so ther's no real answer here.