If Broca's Area Is Destroyed, Then Speech Production Will Be

Multiple Choice

If Broca's area is destroyed, then speech production will be disturbed. Raoul was in a car accident that left the left frontal language area in his brain almost completely destroyed. Brain scans showed that both Broca's area and Wernicke's area were destroyed. Therefore, Raoul's speech will be disturbed. This argument is sound because:

A) it involves asserting the consequent.
B) all of the premises are true.
C) it is both valid and the premises are true.
D) left hemisphere damage leads to language problems.