The statement that is true about the rules of debit and credit is:
if cash is decreased with a debit, the normal balance is a debit.
Debit: In accounting, a debit (Dr.) entry increases asset accounts, expense accounts, and loss accounts. It decreases liability accounts, equity accounts, and revenue accounts.
Normal balance: The normal balance of an account is the side where the majority of entries are posted. For asset accounts like cash, the normal balance is a debit
Decreased with a debit: This statement aligns perfectly with the rules. When cash decreases, you debit the account, and this happens because the majority of entries for cash accounts are debits (since cash is an asset).
Therefore, only the first statement about cash accurately reflects the rules of debit and credit.