Which of the Following Sentences Is Correct

Multiple Choice

Which of the following sentences is correct?

A) The greater the number of independent variables measured, the easier it is to interpret higher-order interactions.
B) The greater the number of independent variables measured, the more difficult it is to interpret higher-order interactions.
C) The greater the number of independent variables measured, the more difficult it is to interpret the lowest-order interaction(s) .
D) The greater the number of independent variables measured, the easier it is to interpret the lowest-order interaction(s) .