$[10]$ The highlighted statement

class Book:

def$\_\_$init$\_\_($self$)$:

self.number $=[]$

books $=[]$

for $i$ in range$(4)$:

books.append$($Book$())$

books$[2].$number.append$(128)$

is illegal statement

will store the value $128$ in the second element of the number list in the second element of the books list

will result in a runtime error

will store the value $128$ in the first element of number list in the $3$rd element of books list