Click here for the answer and explanation.

A - Correct: This option correctly uses “whether” to show the two way contrast of positive and negative action.
B - Incorrect: The conditional “if” does not present the intended contrast.
C - Incorrect: The phrase “was going to go ahead and” is unnecessarily wordy.
D - Incorrect: This option incorrectly uses the present tense “is” for an event that happened in the past.
E - Incorrect: The conditional if does not present the intended contrast in this option.