Please answer all..

1. (1 mark) Which two variables we are trying to swap in the program below? In [ ]: N Z = 3 z - X x - y y = 2 (a). x and y (b). x and z (c) y and z (d). None 2. (3 marks) The following program yields an unexpected output due to rounding issue. Adjust the program to solve this issue. Hint: rather than work with float consider other data types. In [ ]: Nstock_rate = 0.03 stock_rate -- 0.01 print (stock_rate) 3. (1 mark) Which of the following variable names is valid? (a) nonlocal (b). 5Dw_COOL (c). &assign (d). G luck