While Standing at the Tropic of Cancer, Emma's Shadow Points $\underline { \text { definitely } }$

Multiple Choice

While standing at the Tropic of Cancer, Emma's shadow points north at noon (sun time) . Based on this, which of the following can be $\underline { \text { definitely } }$ concluded?

A) It must be the summer solstice.
B) It must be the winter solstice.
C) It must be one of the equinoxes.
D) It must not be the summer solstice.
E) It must not be the winter solstice.