# In a solid atoms A are arranged in ccp array. Atoms B occupy all the octahedral voids and half the tetrahedral voids. The formula of the compound is expected to be

$A{B}_{2}$

$A{B}_{3}$

${A}_{2}{B}_{3}$

${A}_{2}B$

Please do not use chat terms. Example: avoid using "grt" instead of "great".