A bacterial species will inevitably develop greater resistance within a few years to any antibiotics used against it, unless those antibiotics eliminate that species completely. However, no single antibiotic now on the market is powerful enough to eliminate bacterial species X completely. Which one of the following is most strongly supported by the statements above?
A: Bacterial species X is more resistant to at least some antibiotics that have been used against it than it was before those antibiotics were used against it.
B: Bacterial species X will inevitably become more virulent in the course of time.
C: If any antibiotic now on the market is used against bacterial species X, that species will develop greater resistance to it within a few years.
D: It is unlikely that any antibiotic can be developed that will completely eliminate bacterial species X.
Choose A, B, C or D as your solution.
C