Consider the following reactions $$K_{2}Cr_{2}O_{7}\xrightarrow[-H_{2}O]{KOH}[A]\xrightarrow[-H_{2}O]{H_{2}SO_{4}}[B]+K_{2}SO_{4}$$ The products [A] and [B], respectively are :

A

$$K_{2}CrO_{4}\text{ and }CrO$$

B

$$K_{2}CrO_{4}\text{ and }Cr_{2}O_{3}$$

C

$$K_{2}CrO_{4}\text{ and }K_{2}Cr_{2}O_{7}$$

D

$$K_{2}Cr(OH)_{6}\text{ and }Cr_{2}O_{3}$$