Why do Marxist historians see the French Revolution of 1789 as 'Bourgeoisie'?

In order to answer this question adequately it will be necessary to identify what the Marxist historians feel were the causes of the French Revolution. In doing so I will be able to deduce what factors of the causes can be related to a Marxist perspective. I will also look at and discuss the various roles played by the different factions/classes of society and look at the significance of the transition from feudalism to capitalism examining the social and economical connotations of class conflict and social mobility, both of which are commonly associated with Marxism. I shall consider all of the above from a Marxist perspective using material mainly from Marxist historians such as Soboul and Lefebvre and hopefully show the arguments from the revisionist's school of thought and illustrate how there are criticisms and comparatives which can also be drawn. In doing this I should be able to identify the key issues relating to the topic and by deducing what changes if any, occurred and who were the ones to benefit if any changes did indeed occur, I should then be able to draw a conclusion as to why the Marxist historians see the French Revolution as 'Bourgeoisie'.