Which of the Following Statements Is True of Expenses

Which of the following statements is true of expenses?

A) Expenses increase stockholders' equity,so an expense account's normal balance is a credit balance.
B) Expenses decrease stockholders' equity,so an expense account's normal balance is a credit balance.
C) Expenses increase stockholders' equity,so an expense account's normal balance is a debit balance.
D) Expenses decrease stockholders' equity,so an expense account's normal balance is a debit balance.