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【单选题】
在实数的原有运算法则中,我们补充定义新运算“⊕”:当 a≥b时,a⊕b=a;当a<b时,a⊕b=b 2 ,函数f(x)=(1⊕x)?x(其中“?”仍为通常的乘法),则函数f(x)的图象与x轴及直线x=2围成的面积为(  )
A.
15 4
B.
4
C.
17 4
D.
8
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A.
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B.
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