Larry is charged with burglary and he denies the charge. Dan testifies for the prosecution that he saw Larry break into the department store. Larry calls John as his impeachment witness. John testifies that he also saw the burglary but the person who broke into the store was Bill not Larry. This form of impeachment is called ___________.

- impeachment by inconsistent statement

- impeachment for bias

- impeachment by contradiction

- impeachment by showing untruthful character