A matrix multiplied by its inverse is always equal to the identity matrix

The Wall Street Journal wanted information on the personality profiles of its readers and nonreaders? Which of the steps below does not belong in the process used by the Wall Street Journal to obtain the needed information?

A) Each respondent was given a several cards, each listing one personality characteristic. B) Respondents are asked to sort cards and to rank order the personality characteristics. C) Use interval scale data to examine differences in the personality characteristics of readers and nonreaders and relate them to marketing strategy variables. D) All of the above statements belong in the process.

Rotary micrographics cameras automatically feed documents through the machine

Indicate whether the statement is true or false.