Students were given as assortment of household chemicals and were tasked with determining the pH of each substance. The three substances that Sanjay was given tasted sour and they turned blue litmus paper red. Sanjay added each substance to a beaker of water and used a conductivity apparatus to determine if any of the substances conducted electricity. They all made the bulb in the apparatus glow slightly. What conclusion can Sanjay make about the three substances?

A) The three substances are all bases.
B) The three substances are weak acids.
C) Each substance tested has a different acidic pH.
D) The substances given to Sanjay are all found in cleansers.