Which of the following acid on heating gives geometrical isomers as a product ?

Options

A. `CH_(3)-overset(OH)overset(|)CH-CO_(2)H`
B.
C. `CH_(3)-underset(OH)underset(|)CH-CH_(2)-CO_(2)H`
D. All of these

Answer

D

Explanation

(c) `underset(beta- "hydroxy acid")(CH_(3)-underset(OH)underset(|)CH-CH_(2)-CO_(2)H) underset(Delta)to underset("(cis and trans)isomer")(CH_(3)-CH=CH-CO_(2)H)`