Your company has developed a software product to analyse 'big data' From Multiple Sources. While performing beta testing with a small sample of users, you notice that the product has defects because of the following reasons:

- Non-compatibility with the operating system (20%) - Bugs in the software (22%) - Difficulty in understanding instruction manuals (20%) - Non-availability of desired features (15%) - Others (23%) To illustrate the causes of these problems, you could use a:

a) Flowchart

b) Quality Checklist

c) Scatter Diagram

d) Histogram