Barbara Agrees to Act as a Guarantor of Her Wife

Barbara agrees to act as a guarantor of her wife Hannah's debts to Woodlands Bank. Woodlands Bank is put on inquiry about undue influence. How can Woodlands Bank ensure that Barbara had provided her free and fully informed consent to the transaction such that it will not be rendered voidable for undue influence?

A) Woodlands Bank must ascertain that Barbara has received advice from a solicitor who can explain the implications of being a guarantor.
B) Woodlands Bank must give Barbara's solicitor the full details of the transaction as well as its opinion of the relationship between Barbara and Hannah.
C) Woodlands Bank must receive written confirmation from Barbara's solicitor that the solicitor has explained to her the full implications of being a guarantor.
D) All the options provided are correct.