Which of the following reagents can be used to convert benzene diazonium chloride to benzene?

a. SnCl2 / HCI
b. CH3CH2OH
c. H3PO2
d. LiAlH4

Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Hint: Benzene diazonium chloride can be cönverted into benzene using protic acid.

Benzene diazonium chloride can be cönverted into benzene using protic acid as follows