PART a Some Movies Are Long Comedies, for Some Movies $\begin{array} { l } \text { Some M are L.}\\ \text {Some M are C. }\\ \hline\text { Some MI are LC.}\\\end{array}$

PART A Some movies are long comedies, for some movies are long, and some movies are comedies.
Which of the following correctly expresses the form of this argument? a. $\begin{array} { l } \text { Some M are L.}\\ \text {Some M are C. }\\ \hline\text { Some MI are LC.}\\\end{array}$$\quad$ b. $\begin{array} { l } \text { Some \( M \) are LC.}\\ \text { Some M are L.}\\ \hline\text { Some \( \mathrm{M} \) are C.}\\\end{array}$$\quad$ c. $\begin{array} { l } \text {Some \( \mathrm{M} \) are \( \mathrm{C} \). }\\ \text { Some M are LC.}\\ \hline\text {Some \( \mathrm{M} \) are \( \mathrm{L} \).}\\\end{array}$

d. $\begin{array} { l } \text {Some LC are M. }\\ \text { Some M are L}\\ \text {Some M are C. }\\\end{array}$$\quad$ e. $\begin{array} { l } \text {Some M are L }\\ \text { Some M are C.}\\ \text {Some LC are C. }\\\end{array}$ PART B
Which of the following substitutions proves the argument invalid? a. $\quad \mathrm { M } =$ birds, $\mathrm { L } =$ yellow, $\mathrm { C } =$ canaries.
b. $\quad\mathrm { M } =$ vegetables, $\mathrm { L } =$ green, $\mathrm { C } =$ peppers.
c. $\quad\mathrm { M } =$ animals, $\mathrm { L } =$ green, $\mathrm { C } =$ elephants.
d. $\quad \mathrm { M } =$ parrots, $\mathrm { L } =$ green, $\mathrm { C } =$ animals.
e. $\quad \mathrm { M } =$ elephants, $\mathrm { L } =$ red, $\mathrm { C } =$ cats.