Everyone who is excessively generous is not levelheaded, and no one who is levelheaded is bold. Which one of the following is strictly implied by the above? ['Everyone who is excessively generous is not bold.', 'If someone is levelheaded, then that person is neither bold nor excessively generous.', 'No one who is not bold lacks excessive generosity.', 'Everyone who is not bold is excessively generous.']