Which method in the Map interface returns a set of keys in a map?

Group of answer choices

values

entrySet

keySet

set Which statement is true about the set created by the code?

$```$

HashSet set$1=$ new HashSet;

for $($Character letter $=\text{'}$B$\text{'}$; letter D$\text{'}$; letter$++)$

$\{$ set$1.$add$($letter$)$;

$\}$

$```$

The set contains characters $\text{'}$B$\text{'}$ and $\text{'}$D$\text{'}$

The set contains characters $\text{'}$B$\text{'},\text{'}$C$\text{'}$ and $\text{'}$D$\text{'}$

The set contain integers $66,67,$ and $68$ as Ascii codes

The set contains strings $"$B$","$C$",$ and $"$D$"$