You are advising someone on the difference between Smart shopping campaigns and Standard Shopping campaigns. Which of these statements could you use to accurately convey Smart shopping campaigns’ benefits?

Smart Shopping campaigns can help you find and reach audiences across Google by creating a campaign for each channel.
Smart Shopping campaigns can help you find and reach audiences across Google’s platform without needing to create a separate campaign for each channel.
Smart Shopping campaigns can help you find and reach audiences across Shopping and Search without needing to create a separate campaign for each channel.
Smart Shopping campaigns can help you find and reach audiences across Shopping and Search by creating a separate campaign for Shopping and Search.