PLEASE HELP PLEASE HELP ?

Tim Worker is doing his budget. He discovers that the average electric bill for the year was $206.00 with a standard deviation of $10.00. What percent of his expenses in this category would he expect to fall between $184.00 and $200.00?
The z for $184.00 =
A:-.6
B:48.6
C: 26
D: 2.2
E: 22.6
The percent of area associated with $184.00 =
A: 2.2
B: .6
C: 26
D: 22.6
E: 48.6
The z for $200.00 = -
A: .6
B: 48.6
C: 22.6
D: 26
E: 2.2

The percent of area associated with $200.00 =
A: 48.6
B: 2.2
C: 22.6
D: 26
E: .6
Subtracting the two percentages, the percent of expenses between $184.00 and $200.00 is
A: 22.6
B: 48.6
C: .6
D: 2.2
E: 26