What is the area between the curves$=$x$=$ey$$and$=25$x$=2$y$5$from$=1$y$=1$to$=7$y$=7?$

Select one:

a$.$

$78678$e$6$

b$.$

$6+18$e$6+18$

c$.$

$6+786$e$+78$

d$.$

$7+78$