php <?php $num = 10; echo 'What is her age? \n She is $num years old'; ?> Kết quả của đoạn code dưới đây là?7/25php <?php $num = 10; echo 'What is her age? \n She is $num years old'; ?> Kết quả của đoạn code dưới đây là?What is her age? \n She is $num years oldWhat is her age? She is $num years oldWhat is her age? She is 10 years oldWhat is her age?Giải thíchChọn đáp án A.