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Consider the relation $\ {T 1(A, B, C, D, E)}$ with the dependencies $\{E B \rightarrow C, D \rightarrow E, E A \rightarrow  B\}$ and $T 2(A, B, C, D)$ with the dependencies $\{C\rightarrow A, A\rightarrow B, A\rightarrow D\}$. Which of the following is TRUE?

  1. $T 1$ is in $3 NF$
  2. $T 2$ is in $3 NF$
  3. $T1$ is not in $3 NF$
  4. $T 1$ is in $2 NF$

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