Answer :
The only correct answer is C.
A allows decimal and non-decimal values.
B allows any string and you could put a decimal point value into it.
C only allows whole numbers.
D is the same as B just a bit more redundant.
The only correct answer is C.
A allows decimal and non-decimal values.
B allows any string and you could put a decimal point value into it.
C only allows whole numbers.
D is the same as B just a bit more redundant.