Ramona is a woman. Stefan is a man. Which of the following statements is true regarding the potential differences in the corpus callosum between these two individuals?
1) The corpus callosum is larger in Ramona compared to Stefan.
2) The corpus callosum is larger in Stefan compared to Ramona.
3) The corpus callosum is the same size in both Ramona and Stefan.
4) The potential differences in the corpus callosum cannot be determined based on the given information.