A. Nasima said that it is a very fine picture.
B. Nasima exclaimed that it was a very fine picture.
C. Nasima exclaimed that it is a very fine picture
D. Nasima exclained that what a fine picture it was.
Explanation: Exclamatory sentence এর indirect speech করতে হলে: Subject + said পরিবর্তে Exclaimed + that + Reported speech এর Subject বসবে, এখানে it+ Verb এর Past form + article (a/an) থাকলে বসাতে হবে + very/great বসাতে হবে + বাকি অংশ।