​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.
-​If the union leader has already sent strikers to the picket line before entering negotiations,the union has

A) ​Eliminated half of the strategies of the game
B) Forced the firm to choose the best response in the union's best interest
C) Made it in the firm's best interest to accommodate their requests
D) ​All of the above