Account structure for Branding and maximising profit as long as ROI is positive

An advertiser selling anti-bacterial toothbrushes wants to invest in their brand with a set marketing budget. They want another campaign that maximizes profit as long as ROI is positive. Which account structure achieves both goals?

• Run everything in a single campaign, allocating the set marketing budget to it. Automate everything in a single campaign with the Branding and ROI optimizer.
• Divide the marketing budget between Search and Display and run two separate campaigns.
• Allocate the set marketing budget across dedicated branding campaigns.
• Create a separate campaign that can extend its daily budget after profitability is achieved.

The correct answer is:

• Divide the marketing budget between Search and Display and run two separate campaigns.