Apump with an isentropic efficiency of 90% is operating in a rankine cycle. saturated liquid water enters at 100kpa and is compressed to 1mpa. what is the enthalpy at the exit?
a. 417.5kj/kg
b. 418.5kj/kg
c. 416.5kj/kg
d. 419.5kj/kg

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

a.   mass number from atomic number