The polleys want to put in a swimming pool next summer. they need to save $6,000 over 12 months in order to achieve this goal. they set aside the same amount each month and after 7 months discovered they have saved $3,100. the polleys know that they must adjust their plan in order to meet their goal, so they come up with the following options: option a: save the original amount each month but put the pool in one month later than originally planned. option b: increase savings each month by $100 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. either option a or b will allow them to meet their goal. d. neither option a nor option b will allow them to meet their goal.