Beyoncé’s dad, Mathew Knowles, reacts to breast cancer diagnosis: ‘Why me?’

Mathew Knowles is opening up about his private battle with breast cancer. The 67-year-old music manager and father of Beyoncé and Solange went public with his diagnosis on Wednesday’s "Good Morning America." “I also am a survivor of breast cancer,” he said at the top of the interview, timed with Breast Cancer Awareness month.