Consider the following statements \( \mathrm{P} \) I. Every zero ma...

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Consider the following statements
\( \mathrm{P} \)
I. Every zero matrix is a square matrix.
W
II. A matrix has a numerical value.
III. A unit matrix is a diagonal matrix.

Which of the above statement (s) is/are correct?
(1) Only II
(2) Only III
(3) Both II and III
(4) Both I and III
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