Which of the following search terms would be considered a phrase match for the keyword "cat litter?"

Pine cat litter" is a phrase match because it includes the exact keyword "cat litter" with an additional word ("pine") before it. Phrase match keywords trigger ads when the search query contains the exact phrase or a close variation of it, with words before or after. "Pine kitty litter" and "feline clay litter" are not phrase matches because they use synonyms ("kitty," "feline") or different words ("clay") instead of the exact phrase "cat litter." "Litter for cats" is also not a phrase match because it rearranges the words of the original keyword.