9. The main difference between the salt in the Dead
Sea and salt in the school lab is that
A salt in the Dead Sea is saltier.

B salt in the Dead Sea is iodized while that
of the lab is uniodized.

C salt in the Dead Sea is sodium chloride while
that of the lab has its hydrogen replaced.

D salt in the Dead Sea is sodium chloride
while salt in the lab is either soluble or
insoluble in water.