I am sorry...But this is plagarism. I wont report tho
The subjunctive mood is the best.
The subjunctive is rarely used in colloquial English. Totally irrelevant information, but... it is a relic from Latin, where there are many uses for a subjunctive. There is even a special conditional using the subjunctive mood that expresses the exact circumstances you described, which is usually called future less vivid.
What is the underlined word? And if the underlined word is cottage then it is A.
It will be the second one