Consider these class definitions:

class Base :

def op$1($self$)$ :

self.op$2()$

def op$2($self$)$:

print$("$Base$")$

class SubA$($Base$)$ :

def op$2($self$)$: print$("$SubA$")$

class SubB$($SubA$)$:

def op$2($self$)$:

print$("$SubB$")$

super$().$op$2()$

def op$3($self$)$ :

print$("$Ok$")$

what is the result of the following code fragment:

obj $=$ SubA$()$

obj.op$1()$