im pretty sure its option B
dont take my word for it
Answer:
(D)Lucita's estimate is too high.
A-
X=11
(the solution is down)
B-
x+x+1+x+2=36
3x+3=36
3x=36-3
3x=33
x=33/3
x=11
------------
X+1=12
X+2=13
11+12+13=36