Among the following feasible reaction(s) is/are?

A. $$\text{SiO}_2 + \text{LiAlH}_4 \xrightarrow{175-180^\circ \text{C}} \text{SiH}_4 + \text{LiAlO}_2$$​​

B. $$\text{SiH}_4 + 2 \text{O}_2 \xrightarrow{25^\circ \text{C}} \text{SiO}_2 + 2 \text{H}_2 \text{O}$$​​

C. $$\text{SiH}_4 + 4 \text{H}_2 \text{O} \xrightarrow{25^\circ \text{C}} 4 \text{H}_2 + \text{Si(OH)}_4 \quad (\text{Basic medium})$$​​

Choose the correct answer from the options given below:

Correct option is D

​Silane, SiH₄, is formed when SiCl₄ or SiF₄ reacts with Li[AlH₄]. Industrially, SiH₄ is produced from powdered silicon. This is first treated with HCl at 620K to give SiHCl₃. Passage over a catalyst (e.g. AlCl₃) then converts SiHCl₃ into SiH₄ and SiCl₄. Large-scale production of SiHCl₃ and SiH₄ is necessary because they are sources of pure Si for semiconductors. Silanes Si_nH_2n+2​ with straight or branched chains are known for 1≤n≤10. Silanes are explosively inflammable in air.

$$\text{SiH}_4 \xrightarrow{\Delta} \text{Si} + 2\text{H}_2$$

$$\text{SiH}_4 + 2\text{O}_2 \rightarrow \text{SiO}_2 + 2\text{H}_2\text{O}$$

​​Being highly stable, silicon dioxide arises from many methods. Conceptually simple, but of little practical value, combustion of silane gives silicon dioxide. This reaction is analogous to the combustion of methane:

$$\text{SiH}_4 + 2\text{O}_2 \rightarrow \text{SiO}_2 + 2\text{H}_2\text{O}$$

$$\text{SiO}_2 + 4 \text{LiAlH}_4 \rightarrow \text{Si} + 4 \text{LiAlO}_2 + 4 \text{H}_2$$