Multi-choice problem: Continue writing the next sentence in this paragraph:

Next, he grabs a smaller wooden brush, dips it into some liquid in a cap and cleans the boot. when all of the lather

Choose from:
a). is gone, the process continues until the boot is finally dry.
b). is closed the man picks up a spray bottle to rinse the boot.
c). is gone, he uses a cloth to scrub the electric.
d). is gone, he pulls out a scuba diver, dips the gun, slides his scuba gear in the water and then lifts his legs out of the water, takes off his scuba gear, and shows off the suit he just cleaned.
a).