The map below shows different states' votes on the Equal Rights Amendment:

A map of the United States shows 31 states in pink that ratified the Equal Rights Amendment. It shows five states in yellow that ratified the ERA, then rescinded the vote. It shows nine states in which the ERA was ratified in one house of the legislature. It shows seven states in which the ERA was not ratified.
Public Domain

The information on the map supports which of these conclusions? (4 points)

a
The ERA would have passed if the states that ratified it in one house had passed it.

b
The ERA would have passed if the states that rescinded ratification had not done so.

c
Opposition to the ERA was expressed by a majority of states

d
Opposition to the ratification of the ERA was strongest in urban areas.