What Is a Sparkline

What is a sparkline?

A) A type of graph in which a circle is divided into sectors that each represent a proportion of the whole.
B) A chart or graph that presents grouped data with rectangular bars with lengths proportional to the values that they represent.
C) A graphical display of data using bars of different heights. It is similar to a bar chart, but a histogram groups numbers into ranges.
D) A small embedded line graph that illustrates a single trend.