According to "Decoding: Banks $-$ Episode $9,"$ what realization do banks need to have about their core technology?"

Question $20$ options:

$1)$

It needs to be completely replaced

$2)$

It works well as a core ledger capability

$3)$

It's the main source of their problems

$4)$

It's superior to fintech technology

$5)$

It's too expensive to maintain