Which of the following components constitute a molecular mechanics force field?

Q. Which of the following components constitute a molecular mechanics force field?

P. Bond stretching

Q. Bond angle bending

R. Torsional bond rotation

S. Non-bonded interactions

(A) P and Q only

(B) P, Q and R only

(C) P, Q and S only

(D) P, Q, R and S

Ans: P, Q, R and S