Identify the scenario that best exemplifies product liability.

a) A toaster caused burns after the owner sliced the cord.
b) A firm failed to warn consumers that their talcum powder products can cause ovarian cancer.
c) A coffee mug shattered after being dropped and caused a cut on the owner's hand.
d) A car hit a guardrail after the owner ran out of gas, and it caused injuries to the driver's neck.