单项选择题
In the amplification circuit, the BJT is worked in forward-active region, and the voltage of each terminals is V1=2V, V2=6V and V3=2.7V, for the three terminals, which is the emitter ( ), the type of this transistor is ( ).
A、3, NPN
B、2, PNP
C、1,NPN
D、1, PNP