Choose the correct punctuated sentence.
1
How sad it was, when we heard the news of the demise of Dr. A.P.J Kalam.
2
How sad it was when we heard the news of the demise of Dr. A.P.J Kalam.
3
How! sad it was when we heard the news of the demise of Dr. A.P.J Kalam.
4
How sad it was! when we heard the news of the demise of Dr. A.P.J Kalam.