What Is the Important Difference Between Modern Neutrino Detectors and the Chlorine-Argon

Multiple Choice

What is the important difference between modern neutrino detectors and the chlorine-argon detection system of previous decades?

A) The new detectors are smaller and thus can be built more cheaply.
B) The new detectors can be tuned to detect neutrinos of any energy.
C) The new detectors are able to detect all three neutrino types, not just those originally emitted from the Sun.
D) The new detectors are in orbit above our atmosphere, thus avoiding the loss of neutrinos absorbed in Earth's atmosphere.