Right Answer is:
This is a direct narration of exclamatory sentence. We change such sentences in indirect narration using following rules:
“Exclaimed” will remain the same. Inverted commas (” “) are removed and that is used instead. Sign of exclamation (!) given is removed and full stop is used.
The reporting verb is in present tense, so it will be changed into past tense.
Hence, option B is the correct answer.