Which word best describes Michelle Obama's tone in this statement?

"We as parents are our children's first and best role models, and this is particularly true when it comes to their health. We can't lie around on the couch eating French fries and candy bars, and expect our kids to eat carrots and run around the block. But too often, that's exactly what we're doing."

A. Critical

B. Supportive

C. Tolerant

D. Angry