Who are these notable DUOS?

Who are these notable DUOS?

To end this week's them of "Who are these?" ...

Here is a picture of four notable duos, and to make it interesting, these cover different eras and different genres.

Can you identify them?

Please don't cheat by looking them up. Make your best guess. And have fun.

The answer will be given tomorrow (Sunday).

Who are these notable DUOS?
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Thanks to all for participating... Most people got this, with a few exceptions for the B/W comedy duo in C.

The answer is:

A - Sonny and Cher - singing duo, most known for the song "I Got You Babe"
B - Bert and Ernie - Muppets from "Sesame Street"
C - Stan Laurel and Oliver Hardy - comedy duo, in over 100 films, mostly in 1930s and 40s
D - Actor/Actress Newlyweds Ben Affleck and Jennifer Lopez
Who are these notable DUOS?
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