Clarification regarding Business Expense

1. Notice u/s 143(2) will require the assessee to produce proper evidence in person or through a representative. 
2. In your case, the IT department wanted to know whether expenses incurred by the assessee are genuine and are related to business. Gather all the supporting bills in relation to such business expenses and authenticate how such expenses are related to your current business. 
Please correct me if the above solution has an alternative view.