Which is a false statement?

Question

$\begin {array} {1 1} (A)\;93123\: is\: divisible\: by\: 3. & \quad (B)\;3^2 + 4^2 = 5 \\ (C)\;X-2 \geq 9 & \quad (D)\;All \: octagons \: have\: 8\: sides. \end {array}$