CompanyXshipped 5 computerchips, 1 of which was defective, and Company Y shipped 4 computerchips, 2 of which were defective. One computerchip is to be chosen uniformly at random from the 9 chips shipped by the companies.If the chosen chip is found to be defective, what is the probability that the chip came from Company Y ?

A

$$\frac{2}{9}$$

B

$$\frac{4}{9}$$

C

$$\frac{2}{3}$$

D

$$\frac{1}{2}$$