A GT student was asked to find the weights of two balls, A and B, using a scale with random measurement errors. When the student measure one ball at a time, the weights of A and B were 2 Ibs and 3 lbs, respectively. However, if the student measured both balls simultaneously, then the total weights (A+B) were 4 lbs. The poor student was confused, and decided to repeat the above measurements. The new observed weights of A, B, and A+B, are 2, 2.2, and 4.6 lbs, respectively. Use the method of least squares to find the best estimates of the weights of balls A and B. A-___ Ibs, B=___ Ibs A-1.9 lbs and B- 2.5 lbs. A-2.0 lbs and B= 2.4 lbs. A-1.7 Ibs and B- 2.7 ibs. A-1.8 lbs and B= 2.6 lbs