Arrange the following stages of embryogeny of dicots in correct progressive sequence. 
A. Proembryo                 B. Heart shaped embryo                 C. Globular embryo                    D. Mature embryo

• A

  A, C, B and D 

• B

  A, B, C and D  

• C

  C, B, A and D  

• D

  B, C, A and D