In Thomas Park's Experiments with Tribolium Beetles, Which of the Following

Multiple Choice

In Thomas Park's experiments with Tribolium beetles, which of the following was true?

A) T. confusum and T. castaneum had identical niches.
B) T. confusum and T. castaneum always coexisted when cultured together.
C) T. confusum and T. castaneum never coexisted when cultured together.
D) T. confusum and T. castaneum could coexist under some environmental conditions, but not all.
E) T. confusum and T. castaneum proved to be unsuitable species for laboratory experimentation.