What is printed by the following statements ?

D1 = {"cat":12,"dog":6,"elephant":23,"bear":20} 
print("dog" in D1)

1. True
2. False
3. Error
4. None

What is printed by the following statements ?

D1 = {"cat":12,"dog":6,"elephant":23,"bear":20} 
print(25 in D1)

1. True
2. False
3. Error
4. None

What will the following code do?

d = {"Phy":94, "Che":70, "Bio":82, "Eng":95} 
d.update({"Che":72, "Bio":80})

1. It will create new dictionary as dict={"Che":72,"Bio":80} and old d will be deleted.
2. It will throw an error as dictionary cannot he updated.
3. It will simply update the dictionary as dict={"Phy":94, "Che":72, "Bio":80, "Eng":95}.
4. It will not throw any error but it will not do any changes in dict.

What will be the result of the following code?

d = {"Jo":1,"Ra":2} 
d.update({"Phoebe":2})
print(dict)

1. {"Jo":1,"Ra":2,"Ph":2}
2. {"Jo":1,"Ra":2}
3. {"Jo":1,"Ph":2}
4. Error