Which Compound Shows an Intense Absorption at 2710 and $\mathrm { CH } _ { 3 } \mathrm { COCH } _ { 2 } \mathrm { CH } _ { 3 }$

Which compound shows an intense absorption at 2710 and 1705 cm^-1?

A) $\mathrm { CH } _ { 3 } \mathrm { COCH } _ { 2 } \mathrm { CH } _ { 3 }$
B) $\mathrm { PhCOCH } _ { 3 }$
C) $\mathrm { PhCHO }$
D) $\mathrm { CH } _ { 2 } = \mathrm { CHCOCH } _ { 3 }$