Read the following context and choose the best option to answer the question.
Context: With General Motors cancelling or delaying certain projects while moving up others , there has become a bit of a resource imbalance within the company . Designers once tasked to pickups and SUVs may be idled while those who work on small vehicles may be overtaxed . To counteract this situation , certain foreign market vehicles will be designed in places like Warren , Michigan . Given the tremendous communication and data sharing tools now available , certainly the task of sharing design work across continents is no longer an insurmountable task .
Question: Why are designers and engineers unable to get reliable parts ?
Options: 
A. There is a shortage .
B. There is a metal shortage .
C. GM keeps changing plans .
D. There is a recession .


C