B. Your ship gets hit by more and more shells. Your bridge is wrecked and the captain and navigator are killed. The sub's cannon knocks out your gun turrets one by one. Your ship is taking too much damage. The surviving First Officer orders an emergency turn away from the sub and your ship escapes just as other escorts come to your rescue. Your ship will have to return to Canada for major repairs, twenty five of your crew are dead - and the U-Boat escaped. Your crew have a hard time living down the shame of this disaster

Here is a video clip from the recent film "Greyhound" where a destroyer and a corvette battle a surfaced U-Boat.
It is based on a actual battle between a Canadian destroyer and a U-Boat.:

"Greyhound" film (2020) 3:30