Final answer:
Excessive turbo boost can indeed damage the wastegate diaphragm by putting too much pressure on it, aligning with Option A. However, compressor wheel blades are more likely to bend from foreign object damage or an imbalance issue rather than high boost levels alone, making Option B less accurate in this context.
Step-by-step explanation:
The question refers to the effects of too much turbo boost on different components of a turbocharger system in a vehicle. When it comes to Option A, excessive turbo boost can indeed damage the wastegate diaphragm. The wastegate is responsible for regulating the turbo's boost pressure by diverting some exhaust flow away from the turbine wheel, and its diaphragm is a crucial component that can be compromised if exposed to too much pressure. On the other hand, Option B suggests that too much boost can bend compressor wheel blades. While excessive boost can lead to a number of issues, bent compressor blades are typically a result of foreign objects entering the compressor housing or severe imbalance within the turbocharger, rather than just high boost levels. Hence, the accurate statement regarding the effects of excessive turbo boost is primarily associated with Option A.