What is the missing line of code to have the following output?
Output: Pat Jones PJ23
class cholesterol:
lowDensity = 0
highDensity = 0
class patient:
definit__(self, firstName,lastName,idNum):
self.firstName = firstName
self.lastName = lastName

self.idNum = idNum


def_ str _(self)

return self.firstName + "" + self.lastName + "" + self.idNum

patientA