a- 2.25
b-6.75
c-10
d-12

Answer:
B. 6.75 in
Step-by-step explanation:
ABCDEF ~ RSTUVQ
➡️ [tex] \frac{A \: F}{QR} = \frac{AB}{RS} [/tex]
➡️ [tex] \frac{9}{4} = \frac{x}{3} [/tex]
➡️ [tex]x = \frac{27}{4} [/tex]
➡️ [tex] = 6.75 \: in[/tex]