Which of the following statements is correct in the context of using map in a classroom?

a. Map is a socio-political construct.

b. From time immemorial, ‘North’ has always been shown at the top of a map in all socio-political contexts.

c. Map is a three-dimensional device whereas we live in a two dimensional world.

d. Map is an aid to develop a ‘sense of time’ in leaner.

Choose the correct option.