What did siddartha gautama do after seeing old age, sickness, death, and finally a holy man in the city streets?

a.
vowed to rule his people so that fewer would be sick and face old age and death in poverty

b.
shut himself up in the palace and refused to travel outside again

c.
took his riches from the palace and gave them to the needy in the city

d.
cut his hair, traded his robes, and became a religious seeker