AThe value of cell B1 contains the same number of characters as the value of cell B2.
BThere is an absolute reference to cell A1 so that the formula =$A$1 can be copied to other cells without changing the reference to A1.
CThere is a relative reference to cell A1 so the formula will change each time it is copied to other cells.
DThe value of cell B1 is equal to the value of the function in cell A1.