Please use transaction information in the table to answer given questions (12 points): Two concurrent processes to update order A in the Sales table. - T1 : added 23 products to sales table for order A. - T2: removed 13 products from sale table for order A The Following table shows the serial execution of those transactions. Questions: a) Please replace question market (?) with the current number of products for Order A (3 points) b) Which transaction processing problem does transactions above have? Why? (3 points) C) Which transaction property (or properties) is (or are) not satisfied in the transactions? (3 points) d) If you can use lock to solve this issue, how should you do it? Please explain what you are going to do step by step (3 points)