For each scenario listed below, identify the following: the type of business analytics, the era of BI&A, the goal of data mining (if applicable), and whether and how big data and analytics have the potential to bring about change in the listed scenario.

a. A firm experiencing low sales in a particular region wishes to explore the underlying cause.

b. Firms identifying customers through analysis of past purchases to determine who will stay loyal in the next five years and who are likely to churn. 

c. Firms using the variable pricing strategy to charge air fare or hotel services per usage patterns of customers to maximize revenue.

d. Healthcare firms using data collected from personal mobile devices determine likely diseases and cures for individuals.