The capacity of a certain additive white Gaussian noise channel of bandwidth $1 \mathrm{~MHz}$ is $\mathrm{known}$ to be $8 \text{ Mbps}$ when the average transmit power constraint is $50 \mathrm{~mW}$. Which of the following statements can we make about the capacity $C$ (in Mbps) of the same channel when the average transmit power is allowed to be $100 \mathrm{~mW}$?
- $C=8$
- $8 < C < 16$
- $C=16$
- $C>16$
- There is not enough information to determine $C$