Q$8$: Suppose $\{D_0{\}}_n,\{D_1{\}}_n,\{D_2{\}}_n$ are all computationally

indistinguishable. Let's define $\{D_0^{\text{'}}{\}}_n$ in the following way:

$\{D_0^{\text{'}}{\}}_n$ first samples a value $r{D}_0,$ and suppose $r$ can be

parsed as $r_1||r_2,$ then output of $\{D_0^{\text{'}}{\}}_n$ is $r_1||r_1($taking the

first half of $r$ and repeat it$)$

Similarly, we can define $\{D_1^{\text{'}}{\}}_n$ from $\{D_1{\}}_n.$ Would $\{D_0^{\text{'}}{\}}_n$ and

$\{D_1^{\text{'}}{\}}_n$ be computationally indistinguishable? $(10$pts$.)$