What is the name of the bank branch that has lended the largest total amount in loans, specifically to customers with credit scores below 100?
return bank branches ;return loans of #1 ;return customers of #2 ;return credit scores of #3 ;return #2 where #4 is  lower than 100 ;return amounts of #5 ;return sum of #6 for each #1 ;return #1 where #7 is  highest
['select', 'project', 'project', 'project', 'comparative', 'project', 'group', 'superlative']