How are electors for the electoral college determined in each state?

a) each state holds an assembly that determines the number of electors based on the financial capital held six months prior to election day.

b) the us constitution determines the number of electors based on a lottery system designed by the founders.

c) a state gets as many electoral votes as the number of its senators and representatives.

d) a state receives one elector for every 100 citizens within the state.