S. 148A : Reassessment-Conducting inquiry, providing opportunity before issue of notice-Risk Management Strategy-Information Received From Director (Investigation And Criminal Intelligence)-Suffice requirement of information-Consideration for moveable property excess of Rs 50 lakhs-Sanction form Principal Commissioner-Reassessment notice is valid.[S. 147, 148, 148A(b), 148A(d), 149(1)(b), 151, Art. 226]