I need help, Please. At 12:00 p. m., Lou leaves her house and drives north to her parent's home. She arrives at 4:00 p. m. Also leaving at 1:00 p. m. from Lou's house is her friend Amy who leaves and drives south to her parent's home. She arrives at 3:00 p. m. The driving distance between both parent's homes is 330 mi. Lou and Amy drove at the same speed. What was their speed?

a. 60 m/h
b. 55 m/h
c. 45 m/h
d. 50 m/h