The Mechanism That Leads to the Double-Radio Source Phenomenon Appears

Multiple Choice

The mechanism that leads to the double-radio source phenomenon appears to be

A) two active galaxies in orbit around a common center, like a binary star system.
B) two oppositely directed jets of energetic particles from an active galactic object colliding with other intergalactic material.
C) a radio-bright galaxy crossed by a dark, absorbing, edge-on disk, splitting the radio emissions into two as seen from Earth.
D) gravitational lensing of a distant radio source by a nearby galaxy or black hole.