Homologous organs have the same origin but may have different functions. Therefore, the correct answer is A) Same origin, different function.
Homologous organs are structures that are derived from a common ancestral structure but may have undergone modifications over time to serve different functions in different organisms. These modifications can occur due to evolutionary adaptations to different environments or specialized functions. Despite their different functions, homologous organs share similarities in their basic structure and developmental origin. An example of homologous organs is the forelimbs of vertebrates, which may be adapted for different purposes such as flying, swimming, or grasping, but they all have a common origin from the limb structure of their common ancestor.