Which of the following statements correctly identifies a common issue in Angular template binding?
A) "Cannot use 'ngForm' as a directive in this context."
B) "Directive 'FormControl' is not supported by Angular forms."
C) "The property 'formGroup' cannot be accessed within the 'form' element."
D) "Can't bind to 'formGroup' since it isn't a known property of 'form'."