"I couldn't finish the exam in time yesterday. There wasn't enough time."
Je n'ai pas pu finir l'examen à temps hier. Il (n'y avait pas / n'y a pas eu) assez de temps.
Is the imparfait or the passé composé appropriate for the second sentence? I'm not sure if the sentence is talking about the setting in general (which would require the imparfait) or about this exam in particular (which would require the passé composé).