exercises review questions true/false simple decision can be implemented with an if statement in python conditions is written as / strings are compared by lexicographic ordering two-way decision is implemented using an if-elif statement the math sqrt function cannot compute the square root of negative number single try statement can catch multiple kinds of errors multi-way decisions must be handled by nesting multiple if-else statements there is usually only one correct solution to problem involving decision structures the condition < < is allowed in python input validation means prompting user when input is required multiple choice statement that controls the execution of other statements is called aboss structure bsuper structure ccontrol structure dbranch the best structure for implementing multi-way decision in python is aif bif-else cif-elif-else dtry an expression that evaluates to either true or false is called aoperational bboolean csimple dcompound when program is being run directly (not imported),the value of __name__ is ascript bmain c__main__ dtrue the literals for type bool are atf btruefalse ctruefalse placing decision inside of another decision is an example of acloning bspooning cnesting dprocrastination