Please Use the Following Information to Answer the Question(s)below

Multiple Choice

Please use the following information to answer the question(s) below.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining.It adheres to the intestinal lining using a feature that also protects it from bacteriophages and dehydration.Fecal matter from a human in whose intestine this bacterium lives can spread the bacterium,even after being mixed with water and boiled.The bacterium is not susceptible to the penicillin family of antibiotics.It contains no plasmids and relatively little peptidoglycan.
-This bacterium's ability to survive in a human who is taking penicillin pills may be due to the presence of which of the following?
1) penicillin-resistance genes
2) a gram-positive cell wall
3) a gram-negative cell wall
4) an endospore

A) 1 or 4
B) 1 or 3
C) 2 or 4
D) 3 or 4