Rick Irizarry of Irizarry Insurance Company Is Conducting a Survey

Rick Irizarry of Irizarry Insurance Company is conducting a survey of potential customers. Age is an important issue in determining life insurance premiums. Rick considers asking for age in the following way:
How old are you?
___ years?
Rick should consider the level of the measurement scale to be:

A) nominal
B) ordinal
C) interval
D) ratio
E) categorical