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 'How much time do you use the wireless home security system every week on the average?' are values from a

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