The Boolean expression $$B\left( {A + B} \right) + A\left( {\overline B + A} \right)$$     can be realized using minimum number of

A. is a common-emitter amplifier B. uses a p-n-p transistor C. is an oscillator D. has a voltage gain less than one

A. 1 AND gate B. 2 AND gates C. 1 OR gate D. 2 OR gates

A. the gain decreases by 10 times B. the output resistance increases by 10 times C. the f_H increases by 100 times D. the input resistance decreases by 100 times

A. OR gate for a negative logic system B. NAND gate for a negative logic system C. AND gate for a positive logic system D. AND gate for a negative logic system