Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
ORGANS, SORGAN, SNORGA, ?, SNAGOR, SNAGRO
Pointing towards the photograph of a lady, Varun said, βShe is my father-in-lawβs sonβs only sisterβs mother-in-lawβ. How is Varun related to that lady?