In which case did Kelly probably commit a crime?

a.Kelly cashed a personal check for $50. Unknown to Kelly, she had insufficient funds in her account and the check was not paid. When informed that her bank refused payment, Kelly immediately paid the check.

b.Kelly used her credit card to purchase goods for $500, not knowing that this exceeded her approved credit limit. She paid this excess with her next monthly payment.

c.Kelly's credit card was cancelled and she was informed of this fact. Nonetheless, Kelly continued to use the cancelled card.

d.b and c.