True or false?

12 V 2 A 30 1 A 10 b Figure 2: 3.In figure 2. Assume the direction of the currents are correct but the polarity of the battery through which the current of 1A is flowing may or may not be correct. (a) The current I = 1 + 2 = 3A. (True, False) (b) For the loop on the left: -(3) (2) - + (1)(1) = 0 which leads to