A. 12
ExplanationStep 1: Trace is the sum of main diagonal elements. Step 2: Trace = 4 + 8 = 12. Step 3: Ignore off-diagonal elements in trace questions.
Step 1: Trace में केवल main diagonal के तत्व जोड़े जाते हैं। Step 2: Trace = 4 + 8 = 12। Step 3: Trace में off-diagonal elements को ignore करें।
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