Consider the psychoacoustic curve. Which bit assignment is the best for a and $b?$

ect one:

a$.$ Assign a bits to a$.8$ bits to b

b$.$ Assign o bits to a$.12$ bits to $b$

c$.$ Assign $12$ bits to $2\mathrm{.}8.$ bits to b

d$.$ Assign $12$ bits to a obits tob