A company is running an A/B test to determine the effectiveness of two different email marketing campaigns. They randomly select 10,000 email subscribers and split them into two groups: Group A and Group B. Group A receives Email Campaign A and Group B receives Email Campaign B. After the campaign, the company tracks the open rates and click-through rates (CTR) for both campaigns. The results are as follows:

Email Campaign A:
Open rate: 25%
CTR: 5%

Email Campaign B:
Open rate: 30%
CTR: 3%

Assuming that each email has a value of $0.10, which campaign was more effective in terms of generating revenue? Show all calculations.