The correct option is B Raceme
A)Spikelets are the compact spike having few flowers born on an axis called rachilla and surrounded by bracts and its a character of family Gramineae.
Ex-wheat, oats (grass family)
B)Raceme is the inflorescence of indefinite or indeterminate growth having lateral or axillary flowers born acropetally(oldest at base youngest at apex).
Ex-Brassicaceae (mustard family).
C)Cyme is a definite inflorescence where central flower open first and the main axis is terminated.
Ex-Calotropis.
So the correct option is 'Raceme'