Consider the definition f$,$ with nested function g:

def f$[$X$]($xs: List$[$X$])$: List$[$List$[($X$,$ X$)]]=\{$

def g$($x: X$)$: List$[($X$,$ X$)]=\{$

xs$.$map$($y $=>($x$,$ y$))$

$\}$

xs$.$map$($g$)$

$\}$

Consider the expression:

f$($List$(4,5))$

Here$$s the question in text form with the code provided:

Question $15(1$ point$)$

Consider the definition f$,$ with nested function g:

scala

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def f$[$X$]($xs: List$[$X$])$: List$[$List$[($X$,$ X$)]]=\{$ def g$($x: X$)$: List$[($X$,$ X$)]=\{$ xs$.$map$($y $=>($x$,$ y$))\}$ xs$.$map$($g$)\}$

Consider the expression:

scala

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f$($List$(4,5))$

What is the result of evaluating the above expression?

Options:

List$($List$((4,4),(5,5)))$

List$($List$((4,4),(5,4),(5,5),(4,5)))$

List$($List$((4,4),(4,5)),$ List$((5,4),(5,5)))$

List$($List$((4,4),(5,4)),$ List$((4,5),(5,5)))$

List$($List$((5,5),(5,4)),$ List$((4,4),(5,5)))$