​For the Following Question

Multiple Choice

​For the following question
Consider a simultaneous move game between a union and a company.If both the parties bargain hard,each would gain nothing.If only one party bargains hard the accommodating party gets a profit of $1 million while the bargaining party gets a $5 million,while if they both accommodate,they each get $3 million.
-​Is this Nash equilibrium efficient?

A) ​Yes,because the sum of payoffs is highest
B) No,because both the parties can do better
C) No,because both the parties are maximizing their profits
D) ​All of the above