JEE Main 2021 Chemistry question

According to Bohr's atomic theory:- (A) Kinetic energy of electron is (B) The product of velocity (v) of electron and principal quantum number (n), 'vn' . (C) Frequency of revolution of electron in an orbit is (D) Coulombic force of attraction on the electron is Choose the most appropriate answer from the options given below :

• (A)(C) Only
• (B)(A) Only
• (C)(A), (C) and (D) only
• (D)(A) and (D) onlyCorrect