Answer:
C. sales of the current year
Step-by-step explanation:
Trend analysis is a term used in economics to describe a situation where it is necessary to predict the economic movement that a product or service made available in a company will have in the future, based on statistical data.
This analysis is based on sales for the current year, where it is possible to establish some conclusions and define how the company will create strategies to gain market for this product or service.