Multi-select problem: How does the next paragraph end?

How to buy a pet hermit crab
Look for a healthy crab.
Crabs that do not come out of their shells when misted might be ill, and should not be purchased. Likewise, if you see tiny crab limbs scattered about a crab's tank, do not purchase it.

Pick your answer from:
(i) This is a sign that the crab is stressed and vulnerable to other illnesses. Do not obtain crabs that have a musty smell..
(ii) When purchasing a crab, first check for an intact shell : If you encounter one injured crab, you should consult a vet or pick it up by hand. The natural shell is more sturdy and more durable than any other joint in the crab's body..
(iii) Hermit crabs may have underground gills that communicate with their owners through electric stimulation. Head out to the pet store and look at their gills to check for these..
(iv) If you pick up a crab by the tail, it likely does not have healthy shells. Unless you have a scallop crab, it would likely be fine with you to buy a crab shell, as their spines have been examined and they have great teeth that you cannot cut..
(i)