Income tax notice

1. Notice u/s 133(6) deals with calling for information by the specified officer. It is to be noted that such information is to be submitted within a time limit given in the notice. 
2. Failing to reply to a notice will attract a penalty u/s 272A(2) of Rs. 100 for every day during which the default continues. This will be applicable to the assessee or any person who has information about the assessee. Even if no such transaction had taken place still reply is a must. 
3. Yes, you are right, penalty of Rs.100 u/s 272A(2) will be charged on the person to whom notice was sent. 
Please correct me if the above solution has an alternative view. 

Yes they are officers having authority to send notice.