Single/multi-choice problem: Which of the following solutions is better for the following goal:
How to sew the hem on the square skirt.

OPT:
[A]. On the bottom of the skirt, fold less than an inch backwards and secure with pins. Sew on the hem of the skirt until the whole hem is secure.;
[B]. On the top of the skirt, fold less than an inch backwards and secure with pins. Sew on the hem of the skirt until the whole hem is secure.;
[A].