(I have completely rewritten the question in an attempt to make it clearer)
In a certain British English exam, you are given a statement, and must then go through three sentences and choose the one that gives accurate information, according to the original statement.
The original statement is as follows:
1) "This road will be closed for repairs from May 1 for 2 weeks."
The sentence that follows is not the correct answer, however I have difficulty explaining exactly why this is not correct:
2) "This road will be repaired in two weeks' time beginning on May 1."
What I would like to know is if sentence 2 means the same as:
a) they will start repairing the road in two weeks, beginning on May 1
b) they will have finished repairing the road in two weeks, having begun on May 1
c) both a) and b) are possible
P.S.: If this question is still considered unfit for EL&U, please leave me a comment so I can learn how to further improve this and other questions.