The reaction of XeF₆ with a limited amount of quartz gives compound A. Then on reaction with an equivalent amount of XeO₃, A gives B. The products A and B are, respectively

Correct option is B

​Xenon reacts directly with fluorine to produce XeF₂, XeF₄, and XeF₆. Solid XeF₆ is more complex than its gas-phase structure and contains fluoride ion-bridged XeF₅⁺ cations. The xenon fluorides are strong oxidizing agents and form complexes with F^- ions, such as XeF₅^-. At 298 K, XeF₆ reacts with silica.

$$2 \text{XeF}_6 + \text{SiO}_2 \rightarrow 2 \text{XeOF}_4 + \text{SiF}_4$$​

​Oxofluorides are known for Xe(II), Xe(IV), Xe(VI) and Xe(VIII): XeOF₂, XeOF₄, XeO₂F₂, XeO₂F₄ and XeO₃F₂. The 1 :1 reaction of XeF₄ and H₂O in liquid HF yields XeOF₂, isolated as a pale yellow solid which decomposes explosively at 273 K. Partial hydrolysis of XeF₆ gives XeOF₄ (a colourless liquid, mp 227 K), which can be converted to XeO₂F₂. 

$$\text{XeF}_6 + \text{H}_2\text{O} \rightarrow \text{XeOF}_4 + 2\text{HF}$$

$$\text{XeO}_3 + \text{XeOF}_4 \rightarrow 2 \text{XeO}_2\text{F}_2$$