My answer was A, and this is how I got to it:
The test questions are still in an experimental stage.
Experimental stage - that means that only few people answered this question, while the tough one are 18% out of total!!!
ex:
question answered by 100 test takers - 7 answered correctly at the moment
in one month - 1000 answered correctly - the rate might be 60%!
The test questions are still in an experimental stage.
Experimental stage - that means that only few people answered this question, while the tough one are 18% out of total!!!
ex:
question answered by 100 test takers - 7 answered correctly at the moment
in one month - 1000 answered correctly - the rate might be 60%!
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