The identification of common sub-expression and replacement of run-time computations by compile-time computations is _____________

The identification of common sub-expression and replacement of run-tim

1.	The identification of common sub-expression and replacement of run-time computations by compile-time computations is _____________
A.	Local optimization
B.	Loop optimization
C.	Constant folding
D.	Data flow analysis
Answer» D. Data flow analysis