In Angular, if you encounter the error "can't bind to 'formGroup' since it isn't a known property of 'form'", what is the most likely cause of this issue?
A) The ReactiveFormsModule is not imported into the Angular module.
B) The FormsModule is not imported into the Angular module.
C) The formGroup directive is misspelled in the template
D) The Angular version used does not support reactive forms.