Which of the following is a difference between a state senatorial district convention and a precinct convention

a. Delegates selected at the state senatorial district convention go on to a precinct convention.
b. Unlike in a precinct convention, a convention chair is elected in a state senatorial district convention.
c. A secretary is elected in a precinct convention whereas in a state senatorial district convention, he/she is not.
d. Unlike in a state senatorial district convention, in a precinct convention, attendees vote on resolutions approved by the convention‘s resolutions committee.
e. Unlike in a precinct convention, in a state senatorial district convention, each county is granted one delegate for every 300 votes at the last general election.