If ΨP = 03 MPa and ΨS = -0

Multiple Choice

If ΨP = 0.3 MPa and ΨS = -0.45 MPa, the resulting Ψ is

A) +0.75 MPa.
B) -0.75 MPa.
C) -0.15 MPa.
D) +0.15 MPa.
E) -0.42 MPa.