Which statement will return the value for results as 25.0 when it is put in place of the blank line shown above the "}else{" statement?

Given the following code:

Which statement will return the value for results as 25.0 when it is put in place of the blank line shown above the "}else{" statement?
A. results = stringtofloat (var);
B. results = stringtointeger (var);
C. results = atoi (var);
D. results = atof (var);

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