Which article of the nineteen seventy three Constitution mandates secret ballot

Which article of the nineteen seventy three Constitution mandates secret ballot
A: 280
B: 226
C: 288
D: None of these

Article two hundred twenty six states that all elections other than those of the Prime Minister and the Chief Minister shall be by secret ballot. Candidates and voters rely on secret ballot to protect choice in many constitutional offices. The provision is frequently cited during electoral reforms. Mark article two hundred twenty six for exams.