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148. One positive pulse with tw = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with tw = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output in relation to the inputs?
(a) The exclusive-OR output is a 20 s pulse followed by a 40 s pulse, with a separation of 15 s between the pulses.
(b) The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, with a separation of 40 s between the pulses.
(c) The exclusive-OR output is a 15 s pulse followed by a 40 s pulse.
(d) *The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, followed by a 40 s pulse.
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