Idioms and Phrases - Verbal and Reasoning

In the following questions four alternatives are given for the idiom/phraseitalicised and underlinedin the sentence. Choose the alternative which best expresses the meaning of idiom/phrase.
Q1:

This matter has been hanging fire for the last many months and must therefore be decided one way or the other.

A going on slowly

B hotly debated

C stuck up

D ignored

ANS:A - going on slowly

No answer description is available.