Use the Following to Answer the Questions

Multiple Choice

Use the following to answer the questions.
GE Transportation produces locomotive engines for sale in countries around the world.After looking at the total market for locomotive engines,the company found that different rail lines wanted engines.Major rail lines in the U.S.and South America wanted engines to haul heavy freight.Rail lines in Sweden and Germany were interested in a cleaner,greener locomotive engine.Rail lines operated by several Eastern European countries wanted locomotive engines for running short distances between cities in their own country.GE Transportation is currently manufacturing its GE 4400 for heavy freight,its Hybrid Eco-Engine,and its Dash 9,suited for shortline transport.
-Refer to Scenario 5.2.If a GE Transportation researcher analyzes monthly sales data for a four-year time frame,looking for periodic fluctuations,the researcher is doing a ____ analysis.

A) trend
B) seasonal
C) cycle
D) random factor
E) regression