Find the Mode or Modes for Each List of Numbers $75,66,72,77,83,69,78,72,68$

Multiple Choice

Find the mode or modes for each list of numbers.
-Water temperature, in degrees Fahrenheit: $75,66,72,77,83,69,78,72,68$

A) $72^{\circ} \mathrm{F}$
B) $83^{\circ} \mathrm{F}$
C) $73^{\circ} \mathrm{F}$
D) $66^{\circ} \mathrm{F}$