Choice "B" is correct. Analysis of data is not a major function of transaction processing. Analysis is typically performed subsequent to transaction processing.
Choice "a" is incorrect. Data input is a major function of transaction processing along with data storage, data processing, and information output.
Choice "c" is incorrect. Information output is a major function of transaction processing along with data input, data storage, and data processing.
Choice "d" is incorrect. Data storage is a major function of transaction processing along with data input, data processing, and information output.