The Greens want to put an addition on their house 18 months from now. They will need to save $10,620 in order to achieve this goal. They set aside the same amount each month, and after a year discover they have saved $6,120. The Greens must adjust their plan in order to meet their goal, so they came up with the following options:

Option A: Stay with saving the original amount each month but put the addition on one month later than originally planned.

Option B: Increase the amount of money they save each month by $120 from their original plan.

Which of the following statements is true?

a.

Only option A will allow them to meet their goal.

b.

Only option B will allow them to meet their goal.

c.

Both options A and B will allow them to meet their goal.

d.

Neither option A nor option B will allow them to meet their goal.