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The output of the previous question on passing through the “mix columns” step function gives us the output

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The output of the previous question on passing through the “mix columns” step function gives us the output

(a) 3252

(b) 3743

(c) 3425

(d) 3473

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I'd like to ask this question from The AES Algorthm topic in chapter Advanced Encryption Algorithm and Block Cipher Operation of Cryptograph & Network Security

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Correct choice is (d) 3473

Easiest explanation: 64C0 after passing through the “mix columns” round produces an output 3473. This is obtained by multiplying this matrix with the matrix 1441.

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