Analyze these scenarios involving omnichannel marketing automation. Identify which ones highlight the common pitfalls and challenges as described:
- Scenario A: A beauty brand uses an omnichannel approach but sends the same promotional content across email, social media, and in-app notifications without any customization.
- Scenario B: An online bookstore updates its marketing strategies frequently to align with the latest features and algorithms of each platform it uses.
- Scenario C: A fitness app automates all its customer communications, resulting in a lack of personal touch in its user interactions.
- Scenario D: A grocery delivery service finds it challenging to measure campaign effectiveness on WhatsApp due to limited data analytics compared to its email campaigns.
Select the scenarios that reflect common pitfalls and challenges in omnichannel marketing automation.