Resistance of Pseudomonas to a Wide Range of Antibacterial Agents

Resistance of Pseudomonas to a wide range of antibacterial agents is partly due to its

A) production of exoenzyme S.
B) use of the Entner-Doudoroff pathway as its major means of catabolizing glucose.
C) ability to utilize a wide range of organic and nitrogen sources.
D) ability to metabolize many drugs.
E) lack of special requirements for growth.