In the following question, four alternatives are given for the idiom/phrase in bold and italics in the sentence. Choose the alternative which best expresses the meaning of idiom/phrase.
Although both the parents have been running the show for the last ten years, their business is now on its last legs.
About to fructify
About to perish
About to produce results
About to take off
Correct answer is B
No explanation has been provided for this answer.