In $C_{60}$,all carbon atoms are:

• A
  $sp^2$-hybridized and have a truncated icosahedral shape.
• B
  $sp^3$-hybridized and have a truncated icosahedral shape.
• C
  $sp^2$-hybridized with a diamond shape.
• D
  $sp^2$-hybridized with a graphite-like shape.