[单选题]
What can we learn about maur jb w6;wo,/i/llq s+c;0aa lrriage v 8qlk24osftzz5 ., rbyoqd35oows from the passage?
A. They may not guarantee a lasting marriage.
B. They are as binding as they used to be.
C. They are not taken seriously any more.
D. They may help couples tide over hard times.
