For the following question, determine whether the two figures are similar. If so, give the scale factor of the smaller figure to the larger figure.

Two rectangular prisms are shown. The smaller prism on the left has a height of 4, width of 7, and the length of 18. The larger prism on the right has a height of 12, width of 21, and the length of 54.
(1 point)
Responses

yes; 1 : 3
yes; 1 : 3

yes; 1 : 2
yes; 1 : 2

yes; 1 : 5
yes; 1 : 5

no

The correct answer is:

yes; 1 : 3