For the molecule below,

Consider the following statements about its room temperature spectral data

(A) 1H NMR has singlets at 5.48 and 3.18 ppm

(B) 1H NMR has multiplet at 5.48 and singlet at 3.18 ppm

(C) IR has CO stretching bands at 1950 and 1860 cm^–1

(D) IR has only one CO stretching band at 1900 cm^–1 .

The correct pair of statements is