Two Statements are followed by four Conclusions. You have to take the Statements to be true even if they seem to be at variance with commonly known facts. Read all the Conclusions and decide which of the given Conclusions logically follows/follow from the Statements, disregarding the commonly known facts:

Statement-1: All lamps are switches.

Statement-2: No button is a lamp.

Conclusion-I: All switches are buttons.

Conclusion-II: Some buttons are switches.

Conclusion-III: All buttons are switches.

Conclusion-IV: No button is a switch.

Which one of the following is correct?