Quiz — Multilevel hashes

For the given data structure:

my %statistics =
    1900 => {
        Jan => 500,
        Feb => 550,
    },
    2000 => {
        Jan => 1230,
        Feb => 1245,
    };

Select the lines which provide correct access to the data item for February of 1900.

1	dic %statistics<1900><Feb>;
1	dic %statistics{1900}<Feb>;	Hoc rectum est, quia `1900` potest implicite in string converti.
0	dic %statistics{1900}{Feb};	Falsum, quia `Feb` debet esse string.
1	dic %statistics{'1900'}{'Feb'};

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