In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage for frequencies much larger than the cutoff frequency in the low-frequency region?

In the input RC circuit of a single-stage BJT, by how much does the ba

1.	In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage for frequencies much larger than the cutoff frequency in the low-frequency region?
A.	About 0
B.	45
C.	About 90
D.	None of the above
Answer» B. 45