Ann wants to have dinner ready at 6:00p.m. A chicken casserole takes 35 minutes to bake and 15 minutes to prepare. After the casserole is done, Ann has rolls to warm up in the oven for five minutes. What time should she start preparing the casserole? I will Brainliest

a.4:55 p.m. b.5:00 p.m. c.5:05 p.m. d.5:10 p.m.