Which one is expressed as a unit rate?

A. 450 words in 25 minutes C. 10 chickens to 2 ducks
B. 290 kilometres in 3 hours D. $7 0. 0 for 1 pizza
Need the answer quick

Respuesta :

Answer:

c i think

Step-by-step explanation:

my brother used that exact term to tell me what unit rate was when I was younger so