Which of the following statements is FALSE?

Which of the following statements is FALSE?
 
  a. The conclusions reached in a descriptive study depend directly on the specific operational definitions employed.
  b. Changing definitions often results in different descriptive conclusions.
  c. Explanatory research is more dependent upon patterns of relationships, and these are more consistent than definitions.
  d. Definitions are more problematic for explanatory research than descriptive research.
  e. Definitions are more problematic for descriptive research than for explanatory research.