A. (3 0) / (3 0)
ExplanationStep 1: Compare with y² = 4ax. Step 2: 4a = 12 so a = 3 and focus is (a 0) = (3 0). Step 3: y² = 4ax is a right-opening parabola.
Step 1: y² = 4ax से compare करें। Step 2: 4a = 12 इसलिए a = 3 और focus (a 0) = (3 0)। Step 3: y² = 4ax right-opening parabola है।
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