After 24 hrs. of incubation a culture grows a small transluc…

After 24 hrs. of incubation a culture grows a small translucent colony with beta hemolysis. The gram stain results are as follows:        Negative control: g-b        Positive control: g+c        Unknown organism: g+c The catalase test is negative on the unknown colony. Five days later the gram stain is repeated with the following results:       Negative control: g-b       Positive control: g+c       Unknown organism: g-c Explain these results.