![Out of ‘X’ pairs of ribs in humans only ‘Y’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation:](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Out-of-‘X-pairs-of-ribs-in-humans-only-‘Y-pairs-are-true-ribs.-Select-the-option-that-correctly-represents-values-of-X-and-Y-and-provides-their-explanation.jpg)
Out of ‘X’ pairs of ribs in humans only ‘Y’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation:
Option 1 : X = 24, Y = 12 True ribs are dorsally attached to vertebral column but are free on ventral side.
Option 2 : X = 24, Y = 7 True ribs are dorsally attached to vertebral column but are free on ventral side.
Option 3 : X = 12, Y = 5 True ribs are attached dorsally to vertebral column and sternum on the two ends.
Option 4 : X = 12, Y = 7 True ribs are attached dorsally to vertebral column and ventrally to the sternum.