One effective method often used by programmers to comprehend the effect of code is "tracing". Tracing is hand-executing the code in the same sequence and marner that the computer would execute the program. Often, the changes made to variables in the code are recorded in a 'trace table". Each row in the trace table records the values of the variables after a corresponding statement in the left hand cohman of the trace table has been hand-executed. For example, for the code holder = 2 ford = 13 mitsubishi = 5 a completed trace table would be: holden ford mitsubishi holden = 2 ford = 13 mitsubishi = 5 13 Your task is to trace execution of the following Python code and keep track of variables al am, level and threshold: level - 10 threshold - 10 alarm = 3 if level >= threshold: if level