If a data acquisition fard $($DAQ$)$ has $10$ independent ADC channels and a total sampling rate of $1M\frac{S}{sec},$ what is ie maximum frequency that can be sampled without aliasing if $5$ channels are used simultane usly?

a$.200k\text{'}$

h$.KHz$

c$.1MHz$

$*$d$.100kHz$

e$.$ None of the above