Consider the following scenarios:
- Scenario A: A multinational retail company, with an extensive array of products, aims to create detailed pages for each product category based on specific customer search patterns and preferences.
- Scenario B: A global financial services firm seeks to optimize its extensive library of investor education articles and market analysis, which is updated periodically.
- Scenario C: An international airline wants to develop individualized pages for each flight route and destination, based on varying seasonal trends and search data.
- Scenario D: A major healthcare provider plans to optimize its existing web pages for various health services and treatments, which are updated based on new medical research and findings.
Identify the scenarios where programmatic SEO is most appropriate.