Melissa exercises for 20 minutes every day. She decides to increase her daily exercise time by 5 minutes each week. However, according to her doctor’s orders, she can spend no more than 45 minutes a day exercising. For how many weeks can Melissa increase her exercise time this way? A.
at least 13 weeks
B.
at most 5 weeks
C.
at most 13 weeks
D.
at least 5 weeks