Review the following approaches to setting up and managing Facebook Ads campaigns. Determine which approaches are likely to enhance the effectiveness of the campaigns:
- Approach I: Selecting a broad audience to maximize the reach of the Facebook Ads campaign.
- Approach II: Using A/B testing to experiment with different ad creatives, including images and copy.
- Approach III: Regularly analyzing campaign performance metrics such as CTR and ROAS to make data-driven adjustments.
- Approach IV: Keeping the ad content consistent across all campaigns to maintain brand consistency.
Which of these approaches are effective in setting up and optimizing Facebook Ads campaigns?