With reference to the Speaker of Lok Sabha, which of the following statements is/are correct?
- He is considered to be the guardian of powers and privileges of the Lok Sabha members.
- He presides the joint sitting of the two Houses of Parliament.
- He decides whether a bill is a money bill or not.
- He decides disqualification of member(s) on the ground of defection.
Select the correct option from the codes given below: