Which of the following sentences best adheres to AP Style and contains no punctuation, spelling, or grammatical errors?

Wendy's and Burger King both spend about $60,000,000$ dollars annually on advertising, however, Burger King has more sales because it has twenty $\%$ more stores.

Wendy's and Burger King both spend about $$60$ million annually on advertising; however, Burger King has more sales because it has $20\%$ more stores.

Wendys and Burger King both spend about sixty million dollars annually on advertising: however, Burger King has more sales because it has $20\%$ more stores.

Wendy's and Burger King both spend about $$60,000,000$ annually on advertising, however$-$Burger King has more sales because it has $20$ percent more stores.