A right pyramid with square base has side of base 12 cm and height 40 cm. It is kept on its base. It is cut into 4 parts of equal heights by 3 cuts parallel to its base. What is the ratio of volume of the four parts?
1
1 : 8 : 27 : 70
2
1 : 7 : 19 : 47
3
1 : 7 : 19 : 37
4
1 : 8 : 27 : 64