Select the option with correct values for A and B$.$

import numpy as np

b$=$np$.$array$([[-1,20\mathrm{.}87,12],[9\mathrm{.}1,-5\mathrm{.}4,0]])$

print$($b$.$shape$)$

print$($b$[$A$,$ B$])$

$(2,3)$

$-5\mathrm{.}4$