Ola Has Utility Function Given By $u_{O}\left(w_{O}, u_{G}\left(w_{G}\right)\right)$ And Gina Has a Utility Function Given By

Multiple Choice

Ola has utility function given by $u_{O}\left(w_{O}, u_{G}\left(w_{G}\right) \right)$ and Gina has a utility function given by $u_{G}\left(w_{G}\right)$ . Ola is altruistic if which of the following is true?

A) $\frac{\partial u_{O}\left(w_{O}, u_{G}\left(w_{G}\right) \right) }{\partial w_{O}} \geq 0$
B) $\frac{\partial u_{O}\left(w_{O}, u_{G}\left(w_{G}\right) \right) }{\partial w_{O}}<0$
C) $\frac{\partial u_{G}\left(w_{G}\right) }{\partial w_{G}}>0$
D) $\quad \frac{\partial u_{O}\left(w_{O}, u_{G}\left(w_{G}\right) \right) }{\partial u_{G}\left(w_{G}\right) } \geq 0$