A thrift has an annual CGAP of -$25 million. A credit union has an annual CGAP of +$5 million. The thrift has total assets of $500 million and net income of $7.5 million and the credit union has total assets of $40 million and net income of $0.7 million. Calculate each institution's CGAP as a percent of assets. Based on the gap, which institution's NII is more sensitive to interest rates? Explain.