After this code segment is executed, what will be the dimensions of the list multiples:

multiples $=[]$

for outer in range$(1,3)$:

multiples.append$([])$

for inner in range$(1,2)$:

multiples$[$outer$-1].$append$($inner$)$

print$($multiples$)$

a$.)$

$2$ x $1$

b$.)$

$3$ x $2$

c$.)$

$1$ x $2$

d$.)$

$2$ x $3$