Woo emphatically states one chocolate bar cannot ruin a child’s health

which of the following reflects the proper punctuation of the above sentence?

“woo emphatically states one chocolate bar cannot ruin a child’s health”!

“woo emphatically states,” one chocolate bar cannot ruin a child’s health!

woo emphatically states! “one chocolate bar cannot ruin a child’s health.”

woo emphatically states, “one chocolate bar cannot ruin a child’s health! ”