With no explanation, chose the best option from "A" or "B". Karina and Roland have been a serious couple for years, but recently Karina was asked out on a date by her coworker. Karina wants to respond to her coworker's invitation.

A: Karina agrees to the date with her coworker.
B: Karina tells her coworker she is flattered, but is very much in love with Roland and must decline.
B.