Match the Column-I with Column-II and choose the correct option from the following:

Analyze the significant changes in printing technology during 19th century in the world.
In the 17th century the city El Dorado in South America became famous as which one of the following?
Draw the pattern of the magnetic field lines for the two parallel straight conductors carrying current of same magnitude 'I' in opposite directions as shown. Show the direction of magnetic field at a point O which is equidistant from the two conductors. (Consider that the conductors are inserted normal to the plane of a rectangular cardboard.)