_Which of the following are ferrite materials?$?

• A. U‚Äö√á√á‚Äö√á√â‚Äö√á√â and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
• B. U
• C. U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Pu‚Äö√á√á‚Äö√á√â‚Äö√á√¢
• D. U‚Äö√á√á‚Äö√á√â‚Äö√á√ and Th‚Äö√á√á‚Äö√á√â‚Äö√á√¢