Please answer the following question thoroughly showing all intermediates and arrows.
3 ) E- stilbene is an aromatic compound that forms the core of several synthetic dyes . A Grignardreaction between benzylmagnesium bromide and benzaldehyde provides a secondary alcoholintermediate which can be treated with concentrated HCI to provide trans-stilbene . Draw thefull mechanism for the preparation of E-stilbene from benzymagnesium bromide andbenzaldehyde . Indicate all of the reagents that are required for the synthesis . ( 4 Marks )