Which of the following statements is false?

a$.$ Portals are a web$-$based technology that use a web browser to integrate data from multiple sources into a single webpage.

b$.$ Data visualization tools provide advanced visual analysis and techniques to enhance understanding and create additional insight of business data and its true meaning.

c$.$ Data mining tools provide advanced statistical analysis to uncover problems and opportunities hidden within business data.

d$.$ OLAP stands for online application processing and provides multidimensional data analysis.