Statement about vanity metrics

Question:
Select the correct statement regarding vanity metrics.

1. The number of hits on a website is an example of a vanity metric
2. An increase in the percentage of defects detected in testing is an example of a vanity metric
3. An increase in revenue from a customer test group due to a new feature is an example of a vanity metric
4. Mean time to recovery is an example of a vanity metric

Answer:
A - is the correct answer. Vanity metrics are a measure, but they are not helpful for decision-making. With only the measure of hits, you do not know the cause of the hits