An open reading frame (ORF) is a sequence of DNA that begins with a start codon and extends without interruption (no stop codon) to a stop codon, representing the coding sequence for a protein.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: