In $q,$ functions, represented by $y=a{b}^x,y$ rises or falls at constantly increasing rates. $[$Professor Cursio adds $"^"$ means to the power of$,$ so the above equation reads as$"y$ equals $z$ times $b$ raised to the $x$ power."$]$

A$)$ logarithmic

B$)$ power

C$)$ exponential

D$)$ polynomial