A channel uses NRZ ASK modulation to represent $0$s and $1$s$.$ Logic $1$ is represented by V$=10$volts while logic $0$ is represented by $0$volts. The noise power$=64$ volts$^2.$ The system analogue bandwidth $=500$kHz and the system bitrate $=1$ Mbps$.$ Using the Chernoff formula for Q$($x$),$ find the upper bound for the BER. Is this upper bound approximately:

Question $2$Select one or more:

a$.$

$0\mathrm{.}3$

b$.$

$0\mathrm{.}4$

c$.$

$0\mathrm{.}1$

d$.$

$0\mathrm{.}2$