A:﹣π
B:﹣3
C:﹣1
D:﹣ 3
— There is a photo competition that I want to win.
— _______
已知三个正态分布密度函数Φi(x)=12πσie-x-μi22σi2x∈R,i=1,2,3的图象如图所示,则( )