Ruth can read 15 pages in 30 minutes. She decides to create a table to keep track of her progress. From the data provided, at what ratio is the unit rate (constant of proportionality) represented?

(1 point)
Responses

(2, 60)
(2, 60)

(1, 30)
(1, 30)

(12, 15)(12, 15)

(15, 30)