What are two valid ways to return the logical AND of the two expressions and ensure it is data type Boolean?

Given two expressions var1 and var2 .

What are two valid ways to return the logical AND of the two expressions and ensure it is data type Boolean? Choose 2 answers:
A . Boolean(var1 && var2)
B . var1 && var2
C . var1.toBoolean() && var2toBoolean()
D . Boolean(var1) && Boolean(var2)

Answer: A,D