Need a quick answer Business statistics

Fill in the blanks for Q4. Quarterly Indexs Q1 1.001 quarter X Forecast Y =(Slope*X+intercept)*quarterly index Q2 0.984 Q1 9 Y (-6.89 9 +205.39) 1.001- 143.5094 Q3 1.024 Q2 10 Y=(-6.89 10 +205.39)*0.984- 134.2133 04 0.991 Q3 11 Y=(-6.89 11 +205,39)*1.024- 132.7263 Q4 12 Blank Blank slope -6.89 intercept 205.39 Select one: a. Y=(-6.89*12 +205.39)*0.991 = 121.603261 O b. Y=(-6.89*12 +215.39)*0.992=131.5785381 C. Y=(-6.89*12 +215.39)*0.992=111.5785381 d. Y=(-6.89*12 +205.39)*0.991=141.603261