What is an accurate statement about variable scope? (Choose 3)

What is an accurate statement about variable scope? (Choose 3)
A . Parallel blocks can use the same variable name.
B . A variable can be defined at any point in a block.
C . Sub-blocks cannot reuse a parent block’s variable name.
D . Sub-blocks can reuse a parent block’s variable name if it’s value is null.
E . A static variable can restrict the scope to the current block of its value is null.

Answer: A, B, C