A 7406 TTL inverter has a maximum tPLH of 15 ns and a tPHL of 23 ns. A positive pulse that lasts 100 ns is applied to the input. (a) Draw the input and output waveforms. Scale the X-axis such that the end time is 200 ns. (b) Label tPLH and tPHL on the graph. (c) What is the pulse width of the output if worst case propagation delays occur?