With regard to topographical maps consider the following statements,
1.A topographical map portrays both, naturalfeatures as well as man-made features.2.A topographical map is a detailed and accurate illustrationof man-made and natural features on the ground.3.Countries produce official topographicalmaps, also called toposheets.4.The Survey of India produces the country`sofficial toposheets.
Which of the following statements is/are correct?