What is true for hydrogen peroxide and ozone ?
A. `H_(2)O_(2)` acts as a stronger reducing agent in alkaline medium than in acidic medium
B. `H_(2)O_(2) and O_(3)` both are oxidising agents as well as bleaching agents
C. `H_(2)O_(2)` forms a hydrate, `H_(2)O_(2). H_(2)O`
D. Ozone is used in the manufacture of potassium permangnate from pyrolusite
