What Is the Minimum Centers for Disease Control and Prevention

What is the minimum Centers for Disease Control and Prevention (CDC) -recommended moderate-intensity aerobic exercise for adults,older adults,and pregnant women?

A) 1 hour,3 times a week
B) 2 hours,3 times a week
C) 2 hours and 30 minutes a week,spread out across the 7-day period
D) 3 hours and 30 minutes a week,spread out across the 7-day period