Black scholes option pricing (1)

Sir, 1) Does strategic npv and overall value of project means the same thing???? 2) If npv is -$4m and value of option is $2m then what is the overall value of the project??? 3) If npv is -$4m and value of option is -$2m then what is the overall value of the project??? 4) If npv is $4m and value of option is $2m then what is the overall value of the project??? 5) If npv is $4m and value of option is $5m then what is the overall value of the project??? (If ques 2-4 have same explaination than just give me ans of all and explaination of any one of this. I need all of this ans so that i can understand the impact in each situation and also because i saw two different explaination which made me confused)