Please answer the following question by reasoning step-by-step.
I needed my jeans washed when my electricity was cut off, where did I go?\nOptions:\n- thrift store\n- clothing store\n- costume shop\n- shopping mall\n- laundromat

laundromat
Laundromat is an automated self-service laundry.

I needed my jeans washed when my electricity was cut off, I went to laundromat.

.

Thus, the answer is laundromat