EAC Calculation - help

A project was budgeted at $1,000,000. Meanwhile, the project is executed, and the following current figures have been assessed:

PV: $500,000

EV: $450,000

AC: $550,000

Assuming that the cost variance was caused by one-time cost drivers, which are no more effective, what estimate at completion (EaC) can you derive from these figures?
 

o $900,000
o $1,000,000
o $1,100,000
o $1,222,222

 

Anybody help on the answer?

 Looks like is a EAC variances atypical since "cost variance was caused by one-time cost drivers, which are no more effective" 

EAC = AC + (BAC - EV)

EAC = 550,000 + (1,000,000 - 450,000)

EAC = 1,100,000