1354

[skyler.schoolfield]

S is either before R or after T, but not both.

Can be represented
R R
/ \ R - S - T
S or S or
\ / T - S - R
T T
Correct answer incorrect answer

Can someone please help me understand this?

[maryadkins]

Yikes! That's a mess. Sorry about that.

So you'd want to diagram the constraint "S is either before R or after T but not both" as:

S - R and S - T (It's before R but not after T)

OR

T - S and R - S (It's after T but not before R)

[soikeo247n788]

ok. good