Classify the following processes as spontaneous or nonspontaneous:
A. An icicle melting on your hand on a cold dayB. Conversion of water into steam at 120 °C
C. A stone rolling uphillD. Dissolution of salt in water

• A. A: Spontaneous
  B: Spontaneous
  C: Nonspontaneous
  D: Spontaneous
• B. A: Nonspontaneous
  B: Nonpontaneous
  C: Nonspontaneous
  D: Spontaneous
• C. A: Spontaneous
  B: Nonspontaneous
  C: Nonspontaneous
  D: Spontaneous
• D. A: Nonspontaneous
  B: Spontaneous
  C: Nonspontaneous
  D: Spontaneous

Answer: (A)