Pregunta: 6. Luego usted de haber construido las moléculas de ciclobutano, C4H8, ciclopentano, C5H10 ciclohexano, C6H12, en la experiencia de laboratorio: a) Dibuje todos los posibles isómeros geométricos de cada diclorocicloalcano estudiado.b) Escriba debajo el nombre completo de cada isómero geométrico e identifique con un asterisco (∗) todos los con carbonos

what is the answers for this exercises
translation of the questions into English
6) after you have built the molecules of cyclobutane, C4H8, Cyclopentane, C5H10, Cyclohexane, C6H12.

A) Draw all the possible geometric isomers of each dichlorocycloalkane studied.

B) Write below the complete name of each geometric isomer and identify with an asterisk * all those with chiral carbons present in each one.
C) Identify the most stable arrangement of each geometric isomer in dichlorocyclohexane, as applicable.

for the las question D
D) Cyclopentane, unlike cyclohexane, is a planar molecule. Why is this statement true?