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**Common Data for Questions 71, 72,73:**

In the transistor amplifier circuit shown in the figure below, the transistor has the following parameters:

\[ \beta_{\mathrm{DC}}=60, \mathrm{~V}_{\mathrm{BE}}=0.7 \mathrm{~V}, h_{n^{c}} \longrightarrow \infty, h_{f \times} \longrightarrow \infty\]

The capacitance $\mathrm{C}_{\text {c }}$ can be assumed to be infinite.

In the figure above, the ground has been shown by the symbol $\nabla$

The small-signal gain of the amplifier $v_{c} / v_{s}$ is

- $-10$
- $-5.3$
- $5.3$
- $10$