Which of the following are counting and describing associated with

A．It leads to increased variability
B．It solves all numerical problems
C．It simplifies unwieldy masses of data
D．It changes qualitative variables to quantitative variables

A．To present the background of statistics in a humorous and understandable way
B．To point out that parents can teach their children statistics
C．To explain that there are different kinds of variables
D．To introduce inferential statistics