**Core Concept**
Non-coagulase Staphylococci (NCS) are a group of Staphylococcal species that do not produce the enzyme coagulase, which is a key virulence factor in Staphylococcus aureus. This distinguishes them from the more pathogenic S. aureus. NCS are often commensal organisms found on the skin and mucous membranes.

**Why the Correct Answer is Right**
The correct answer is related to the ability of NCS to produce urease, an enzyme that breaks down urea into ammonia and carbon dioxide. This characteristic is a key differentiator between NCS and coagulase-positive Staphylococci. Urease production is a useful diagnostic tool in differentiating NCS from S. aureus. The ability of NCS to produce urease reflects their adaptation to the skin environment, where they can metabolize urea and other nitrogen-rich compounds.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because while some NCS may produce lipase, this is not a universal characteristic of the group. Lipase production is more closely associated with specific species within the NCS group, such as Staphylococcus epidermidis.
**Option B:** Incorrect because NCS are generally not associated with the production of hemolysins, such as alpha-hemolysin. This characteristic is more closely associated with S. aureus.
**Option C:** Incorrect because while some NCS may be resistant to certain antibiotics, this is not a defining characteristic of the group. Antibiotic resistance patterns can vary widely among different NCS species.

**Clinical Pearl / High-Yield Fact**
A key clinical correlation is that NCS are often implicated in nosocomial infections, particularly in patients with compromised skin integrity or those undergoing invasive medical procedures. This is because NCS can colonize the skin and mucous membranes, and then cause infection when the host's defenses are breached.

**Correct Answer: C. NCS are capable of producing urease.**