Which statement represents an example of spatial filtering?

Which statement represents an example of spatial filtering?

• A. Filtering out all businesses in a particular industry using the text attribute 'Industry'
• B. Filtering out forest stands within 50 kilometers of a road using the Bufferer and the PointOnAreaOverlayer
• C. Filtering out natural gas wells that had casing failures within the last year using the date attribute 'LastCasingFailureDate'
• D. Filtering out website visitor sessions that resulted in a purchase using the boolean attribute 'SessionPurchase'

Answer: (B)