Consider the following statements(a) BJT is a current controlled device with high input impedance and high gain band width(b) FET is a voltage- controlled device with high input impedance and low gain bandwidth(c) UJT is a negative resistance device and can be used as an oscillator(d) FET and UJT can be used for amplificationWhich of the above statements are correct

• A. (a) and (b)
• B. (b) and (c)
• C. (c) and (d)
• D. (a) and (d)