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Answer:
B. [tex]\frac{R'T'}{RT} = \frac{15}{8}[/tex]
Step-by-step explanation:
The dillation implies that both triangles RST and R'S'T' are similar and satisfies the following relationships:
(i) [tex]\frac{R'T'}{RT} = \frac{S'T'}{ST} = \frac{R'S'}{RS} = k[/tex]
(ii) [tex]k > 1[/tex] (Enlargement)
There, the only option that fulfills this requirements is B. The correct answer is [tex]\frac{R'T'}{RT} = \frac{15}{8}[/tex].