The correct option is C to have caught
The correct answer here is Option C) - 'To have caught'. This is because this phrase satisfies the rules of proper grammatical convention the best and follows the tense of the sentence as well (in this case, past). The answer is to have caught as we use the infinitive form of the verb (to + root verb) when one verb is already conjugated ('was'). Thus, are to have caught is the correct answer. All other options are incorrect.