Hmm, I'm not sure. This seems a bit tricky. I'll need to double-check the properties of the relational operations to make sure I'm selecting the right one.
Option C looks like the way to go. The question is asking for a relational algebraic expression, and this option seems to match the result relation shown.
Valene
19 days agoBecky
7 days agoBerry
29 days agoKenneth
5 days agoSonia
10 days agoBok
24 days agoSamira
1 months agoGilma
1 months agoIsreal
1 months agoBettyann
19 days agoSharika
24 days agoEve
1 months agoMalcolm
2 months ago