(a) Mr. Ranjan availed ITC of ₹ 1,00,000 in GSTR-3B for the month of June, 2024. The Output tax liability for June 2024 was Nil. His intra-State output supply for the month of July 2024 was ₹ 5,00,000 (excluding GST). He utilized the available ITC against the output tax liability for the month of July 2024 while filing GSTR-3B. Mr. Ranjan found on 22nd September, 2024 that he wrongly availed ITC of ₹ 1,00,000 in the month of June 2024. He reversed the unutilized amount of wrongly availed ITC standing in credit ledger on 30th September, 2024 and paid the utilized amount of ITC by cash. The GST rate is 18%. Calculate the interest payable under the applicable GST law, if Mr. Ranjan filed: (i) Form GSTR-3B for the month of June 2024 on 19 July, 2024. (ii) Form GSTR-3B for the month of July 2024 was filed on 25 August, 2024. (Note: The due date of filing of GSTR-3B is 20th day of the following month. But the due date of filing of GSTR-3B was extended to 22nd August, 2024 for the month of July 2024)

(b) Briefly discuss the provisions related to inspection and verification of goods in transit as laid in Rule 138C of CGST Rules, 2017.