The primary fuel used in nuclear power plants is

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