Instruction 1.1 The Manager of the Customer Service Division of a Major

Instruction 1.1
The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a wireless home security system made by the company over the past 12 months are satisfied with their products.
-Referring to Instruction 1.1,the possible responses to the question 'What is your annual income rounded to the nearest thousand?' are values from a

A) discrete numerical random variable.
B) continuous numerical random variable.
C) categorical random variable.
D) parameter.