Question:
Who was the head coach of the team FC Astra Giurgiu in Oct, 2018?

Context:
 Dan Alexa is the head coach of FC Astra Giurgiu from Jun, 2019 to Oct, 2019. 
 Bogdan Andone is the head coach of FC Astra Giurgiu from Oct, 2019 to Sep, 2020. 
 Edward Iordănescu is the head coach of FC Astra Giurgiu from Jun, 2017 to Apr, 2018. 
 Ionuț Badea is the head coach of FC Astra Giurgiu from May, 2021 to Jun, 2021. 
 Florin Stângă is the head coach of FC Astra Giurgiu from Jul, 2021 to Dec, 2022. 
 Gheorghe Mulțescu is the head coach of FC Astra Giurgiu from Sep, 2018 to Nov, 2018. 
 Costel Enache is the head coach of FC Astra Giurgiu from Nov, 2018 to Jun, 2019. 
 Marius Măldărășanu is the head coach of FC Astra Giurgiu from Jun, 2018 to Sep, 2018.

Answer:
Gheorghe Mulțescu